256342650 has 24 divisors (see below), whose sum is σ = 635730144. Its totient is φ = 68358000.

The previous prime is 256342637. The next prime is 256342657. The reversal of 256342650 is 56243652.

It is not an unprimeable number, because it can be changed into a prime (256342657) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 854326 + ... + 854625.

It is an arithmetic number, because the mean of its divisors is an integer number (26488756).

Almost surely, 2^256342650 is an apocalyptic number.

256342650 is an abundant number, since it is smaller than the sum of its proper divisors (379387494).

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

256342650 is a wasteful number, since it uses less digits than its factorization.

256342650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1708966 (or 1708961 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 33.

The square root of 256342650 is about 16010.7042318569. The cubic root of 256342650 is about 635.2435877012.

The spelling of 256342650 in words is "two hundred fifty-six million, three hundred forty-two thousand, six hundred fifty".