256350290 has 32 divisors (see below), whose sum is σ = 531218304. Its totient is φ = 87246720.

The previous prime is 256350287. The next prime is 256350307. The reversal of 256350290 is 92053652.

256350290 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3776 + ... + 22955.

It is an arithmetic number, because the mean of its divisors is an integer number (16600572).

Almost surely, 2^256350290 is an apocalyptic number.

256350290 is an abundant number, since it is smaller than the sum of its proper divisors (274868014).

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

256350290 is a wasteful number, since it uses less digits than its factorization.

256350290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26882.

The product of its (nonzero) digits is 16200, while the sum is 32.

The square root of 256350290 is about 16010.9428204588. The cubic root of 256350290 is about 635.2498985418.

The spelling of 256350290 in words is "two hundred fifty-six million, three hundred fifty thousand, two hundred ninety".