426250640 has 40 divisors (see below), whose sum is σ = 993652920. Its totient is φ = 170049536.

The previous prime is 426250631. The next prime is 426250663. The reversal of 426250640 is 46052624.

It can be written as a sum of positive squares in 4 ways, for example, as 7311616 + 418939024 = 2704^2 + 20468^2 .

It is a tau number, because it is divible by the number of its divisors (40).

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, 24272 + ... + 37968.

It is an arithmetic number, because the mean of its divisors is an integer number (24841323).

Almost surely, 2^426250640 is an apocalyptic number.

426250640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

426250640 is an abundant number, since it is smaller than the sum of its proper divisors (567402280).

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

426250640 is a wasteful number, since it uses less digits than its factorization.

426250640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14099 (or 14093 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 29.

The square root of 426250640 is about 20645.8383215601. The cubic root of 426250640 is about 752.5840584825.

The spelling of 426250640 in words is "four hundred twenty-six million, two hundred fifty thousand, six hundred forty".