256044190 has 64 divisors (see below), whose sum is σ = 518400000. Its totient is φ = 90599040.

The previous prime is 256044179. The next prime is 256044193. The reversal of 256044190 is 91440652.

It is a super-2 number, since 2×256044190² = 131117254465512200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256044193) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 170061 + ... + 171559.

It is an arithmetic number, because the mean of its divisors is an integer number (8100000).

Almost surely, 2^256044190 is an apocalyptic number.

256044190 is an abundant number, since it is smaller than the sum of its proper divisors (262355810).

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

256044190 is a wasteful number, since it uses less digits than its factorization.

256044190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1585.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 256044190 is about 16001.3808779118. The cubic root of 256044190 is about 634.9969537126.

The spelling of 256044190 in words is "two hundred fifty-six million, forty-four thousand, one hundred ninety".