256220374 has 8 divisors (see below), whose sum is σ = 390631248. Its totient is φ = 126009960.

The previous prime is 256220369. The next prime is 256220387. The reversal of 256220374 is 473022652.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1049962 + ... + 1050205.

It is an arithmetic number, because the mean of its divisors is an integer number (48828906).

Almost surely, 2^256220374 is an apocalyptic number.

256220374 is a deficient number, since it is larger than the sum of its proper divisors (134410874).

256220374 is a wasteful number, since it uses less digits than its factorization.

256220374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2100230.

The product of its (nonzero) digits is 20160, while the sum is 31.

The square root of 256220374 is about 16006.8852060605. The cubic root of 256220374 is about 635.1425674475.

The spelling of 256220374 in words is "two hundred fifty-six million, two hundred twenty thousand, three hundred seventy-four".