656433402 has 32 divisors (see below), whose sum is σ = 1327233600. Its totient is φ = 216428160.

The previous prime is 656433397. The next prime is 656433419. The reversal of 656433402 is 204334656.

It is a super-2 number, since 2×656433402² = 861809622522587208, which contains 22 as substring.

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 15 ways as a sum of consecutive naturals, for example, 273118 + ... + 275510.

It is an arithmetic number, because the mean of its divisors is an integer number (41476050).

Almost surely, 2^656433402 is an apocalyptic number.

656433402 is an abundant number, since it is smaller than the sum of its proper divisors (670800198).

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

656433402 is a wasteful number, since it uses less digits than its factorization.

656433402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2878.

The product of its (nonzero) digits is 51840, while the sum is 33.

The square root of 656433402 is about 25620.9563053372. The cubic root of 656433402 is about 869.0876073625.

The spelling of 656433402 in words is "six hundred fifty-six million, four hundred thirty-three thousand, four hundred two".