426716388 has 72 divisors (see below), whose sum is σ = 1305263232. Its totient is φ = 114746112.

The previous prime is 426716377. The next prime is 426716413. The reversal of 426716388 is 883617624.

426716388 is a `hidden beast` number, since 4 + 2 + 6 + 7 + 1 + 638 + 8 = 666.

It is a nialpdrome in base 12.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 45520 + ... + 54087.

It is an arithmetic number, because the mean of its divisors is an integer number (18128656).

Almost surely, 2^426716388 is an apocalyptic number.

It is an amenable number.

426716388 is an abundant number, since it is smaller than the sum of its proper divisors (878546844).

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

426716388 is a wasteful number, since it uses less digits than its factorization.

426716388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99641 (or 99636 counting only the distinct ones).

The product of its digits is 387072, while the sum is 45.

The square root of 426716388 is about 20657.1147065605. The cubic root of 426716388 is about 752.8580654477.

The spelling of 426716388 in words is "four hundred twenty-six million, seven hundred sixteen thousand, three hundred eighty-eight".