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6747972 = 22371167109
BaseRepresentation
bin11001101111011101000100
3110200211110220
4121233131010
53211413342
6400344340
7111233250
oct31573504
913624426
106747972
113899940
1223150b0
1315235aa
14c79260
158d45ec
hex66f744

6747972 has 96 divisors (see below), whose sum is σ = 20106240. Its totient is φ = 1710720.

The previous prime is 6747971. The next prime is 6747973. The reversal of 6747972 is 2797476.

It is an interprime number because it is at equal distance from previous prime (6747971) and next prime (6747973).

It is a super-2 number, since 2×67479722 = 91070252225568, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (6747971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 61854 + ... + 61962.

It is an arithmetic number, because the mean of its divisors is an integer number (209440).

Almost surely, 26747972 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6747972, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10053120).

6747972 is an abundant number, since it is smaller than the sum of its proper divisors (13358268).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6747972 is a wasteful number, since it uses less digits than its factorization.

6747972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201 (or 199 counting only the distinct ones).

The product of its digits is 148176, while the sum is 42.

The square root of 6747972 is about 2597.6858932519. The cubic root of 6747972 is about 188.9692287744.

It can be divided in two parts, 674 and 7972, that added together give a triangular number (8646 = T131).

The spelling of 6747972 in words is "six million, seven hundred forty-seven thousand, nine hundred seventy-two".

Divisors: 1 2 3 4 6 7 11 12 14 21 22 28 33 42 44 66 67 77 84 109 132 134 154 201 218 231 268 308 327 402 436 462 469 654 737 763 804 924 938 1199 1308 1407 1474 1526 1876 2211 2289 2398 2814 2948 3052 3597 4422 4578 4796 5159 5628 7194 7303 8393 8844 9156 10318 14388 14606 15477 16786 20636 21909 25179 29212 30954 33572 43818 50358 51121 61908 80333 87636 100716 102242 153363 160666 204484 240999 306726 321332 481998 562331 613452 963996 1124662 1686993 2249324 3373986 6747972