426640772 has 24 divisors (see below), whose sum is σ = 794979360. Its totient is φ = 199644800.

The previous prime is 426640769. The next prime is 426640783. The reversal of 426640772 is 277046624.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5354 + ... + 29697.

It is an arithmetic number, because the mean of its divisors is an integer number (33124140).

Almost surely, 2^426640772 is an apocalyptic number.

It is an amenable number.

426640772 is a deficient number, since it is larger than the sum of its proper divisors (368338588).

426640772 is a wasteful number, since it uses less digits than its factorization.

426640772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35251 (or 35249 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 38.

The square root of 426640772 is about 20655.2843601825. The cubic root of 426640772 is about 752.8135929128.

The spelling of 426640772 in words is "four hundred twenty-six million, six hundred forty thousand, seven hundred seventy-two".