268639602 has 48 divisors (see below), whose sum is σ = 674942016. Its totient is φ = 69775200.

The previous prime is 268639597. The next prime is 268639603. The reversal of 268639602 is 206936862.

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 (268639603) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 21349 + ... + 31512.

It is an arithmetic number, because the mean of its divisors is an integer number (14061292).

Almost surely, 2^268639602 is an apocalyptic number.

268639602 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

268639602 is an abundant number, since it is smaller than the sum of its proper divisors (406302414).

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

268639602 is a wasteful number, since it uses less digits than its factorization.

268639602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52895 (or 52884 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 42.

The square root of 268639602 is about 16390.2288574626. The cubic root of 268639602 is about 645.2430644514.

The spelling of 268639602 in words is "two hundred sixty-eight million, six hundred thirty-nine thousand, six hundred two".