426643920 has 60 divisors (see below), whose sum is σ = 1432814916. Its totient is φ = 113771520.

The previous prime is 426643913. The next prime is 426643933. The reversal of 426643920 is 29346624.

426643920 is a `hidden beast` number, since 4 + 2 + 6 + 643 + 9 + 2 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 269091216 + 157552704 = 16404^2 + 12552^2 .

It is a tau number, because it is divible by the number of its divisors (60).

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 295561 + ... + 297000.

Almost surely, 2^426643920 is an apocalyptic number.

426643920 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

426643920 is an abundant number, since it is smaller than the sum of its proper divisors (1006170996).

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

426643920 is a wasteful number, since it uses less digits than its factorization.

426643920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 592580 (or 592571 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 36.

The square root of 426643920 is about 20655.3605633017. The cubic root of 426643920 is about 752.8154444715.

The spelling of 426643920 in words is "four hundred twenty-six million, six hundred forty-three thousand, nine hundred twenty".