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764868 = 223134903
BaseRepresentation
bin10111010101111000100
31102212012110
42322233010
5143433433
624221020
76333636
oct2725704
91385173
10764868
11482725
1230a770
1320a1b0
1415ca56
15101963
hexbabc4

764868 has 24 divisors (see below), whose sum is σ = 1922368. Its totient is φ = 235296.

The previous prime is 764857. The next prime is 764887. The reversal of 764868 is 868467.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

764868 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2296 + ... + 2607.

2764868 is an apocalyptic number.

764868 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

It is an amenable number.

764868 is an abundant number, since it is smaller than the sum of its proper divisors (1157500).

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

764868 is a wasteful number, since it uses less digits than its factorization.

764868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4923 (or 4921 counting only the distinct ones).

The product of its digits is 64512, while the sum is 39.

The square root of 764868 is about 874.5673215939. The cubic root of 764868 is about 91.4524821205.

The spelling of 764868 in words is "seven hundred sixty-four thousand, eight hundred sixty-eight".

Divisors: 1 2 3 4 6 12 13 26 39 52 78 156 4903 9806 14709 19612 29418 58836 63739 127478 191217 254956 382434 764868