426331520 has 32 divisors (see below), whose sum is σ = 1019200320. Its totient is φ = 170532352.

The previous prime is 426331513. The next prime is 426331537. The reversal of 426331520 is 25133624.

It is a tau number, because it is divible by the number of its divisors (32).

It is a self number, because there is not a number n which added to its sum of digits gives 426331520.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 332432 + ... + 333711.

It is an arithmetic number, because the mean of its divisors is an integer number (31850010).

Almost surely, 2^426331520 is an apocalyptic number.

426331520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

426331520 is an abundant number, since it is smaller than the sum of its proper divisors (592868800).

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

426331520 is an equidigital number, since it uses as much as digits as its factorization.

426331520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 666162 (or 666150 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 426331520 is about 20647.7969769174. The cubic root of 426331520 is about 752.6316557906.

The spelling of 426331520 in words is "four hundred twenty-six million, three hundred thirty-one thousand, five hundred twenty".