426640576 has 56 divisors (see below), whose sum is σ = 879469920. Its totient is φ = 205105152.

The previous prime is 426640567. The next prime is 426640583. The reversal of 426640576 is 675046624.

It is a super-2 number, since 2×426640576² = 364044362179223552, which contains 22 as substring.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 847941 + ... + 848443.

It is an arithmetic number, because the mean of its divisors is an integer number (15704820).

Almost surely, 2^426640576 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 426640576, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (439734960).

426640576 is an abundant number, since it is smaller than the sum of its proper divisors (452829344).

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

426640576 is a wasteful number, since it uses less digits than its factorization.

426640576 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1001 (or 991 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 40.

The square root of 426640576 is about 20655.2796156334. The cubic root of 426640576 is about 752.8134776312.

The spelling of 426640576 in words is "four hundred twenty-six million, six hundred forty thousand, five hundred seventy-six".