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1385748 = 223471347
BaseRepresentation
bin101010010010100010100
32121101220000
411102110110
5323320443
645411300
714531040
oct5222424
92541800
101385748
11867151
12569b30
13396990
14281020
151c58d3
hex152514

1385748 has 120 divisors (see below), whose sum is σ = 4553472. Its totient is φ = 357696.

The previous prime is 1385743. The next prime is 1385749. The reversal of 1385748 is 8475831.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1385743) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 29461 + ... + 29507.

21385748 is an apocalyptic number.

1385748 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1385748, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2276736).

1385748 is an abundant number, since it is smaller than the sum of its proper divisors (3167724).

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

1385748 is a wasteful number, since it uses less digits than its factorization.

1385748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83 (or 72 counting only the distinct ones).

The product of its digits is 26880, while the sum is 36.

The square root of 1385748 is about 1177.1779814455. The cubic root of 1385748 is about 111.4879902875.

It can be divided in two parts, 138 and 5748, that added together give a triangular number (5886 = T108).

The spelling of 1385748 in words is "one million, three hundred eighty-five thousand, seven hundred forty-eight".

Divisors: 1 2 3 4 6 7 9 12 13 14 18 21 26 27 28 36 39 42 47 52 54 63 78 81 84 91 94 108 117 126 141 156 162 182 188 189 234 252 273 282 324 329 351 364 378 423 468 546 564 567 611 658 702 756 819 846 987 1053 1092 1134 1222 1269 1316 1404 1638 1692 1833 1974 2106 2268 2444 2457 2538 2961 3276 3666 3807 3948 4212 4277 4914 5076 5499 5922 7332 7371 7614 8554 8883 9828 10998 11844 12831 14742 15228 16497 17108 17766 21996 25662 26649 29484 32994 35532 38493 49491 51324 53298 65988 76986 98982 106596 115479 153972 197964 230958 346437 461916 692874 1385748