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30246972 = 2237615903
BaseRepresentation
bin111001101100…
…0100000111100
32002220201001020
41303120200330
530220400342
63000144140
7515044410
oct163304074
962821036
1030246972
1116089aa8
12a168050
136360522
144034d40
1529c70ec
hex1cd883c

30246972 has 48 divisors (see below), whose sum is σ = 81994752. Its totient is φ = 8498880.

The previous prime is 30246959. The next prime is 30246973. The reversal of 30246972 is 27964203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30246973) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2173 + ... + 8075.

It is an arithmetic number, because the mean of its divisors is an integer number (1708224).

Almost surely, 230246972 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 30246972, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40997376).

30246972 is an abundant number, since it is smaller than the sum of its proper divisors (51747780).

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

30246972 is a wasteful number, since it uses less digits than its factorization.

30246972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5978 (or 5976 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 33.

The square root of 30246972 is about 5499.7247203837. The cubic root of 30246972 is about 311.5735874385.

It can be divided in two parts, 302 and 46972, that added together give a palindrome (47274).

The spelling of 30246972 in words is "thirty million, two hundred forty-six thousand, nine hundred seventy-two".

Divisors: 1 2 3 4 6 7 12 14 21 28 42 61 84 122 183 244 366 427 732 854 1281 1708 2562 5124 5903 11806 17709 23612 35418 41321 70836 82642 123963 165284 247926 360083 495852 720166 1080249 1440332 2160498 2520581 4320996 5041162 7561743 10082324 15123486 30246972