256412190 has 32 divisors (see below), whose sum is σ = 651589920. Its totient is φ = 64354304.

The previous prime is 256412161. The next prime is 256412197. The reversal of 256412190 is 91214652.

It is a super-2 number, since 2×256412190² = 131494422361192200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256412197) by changing a digit.

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, 250875 + ... + 251894.

It is an arithmetic number, because the mean of its divisors is an integer number (20362185).

Almost surely, 2^256412190 is an apocalyptic number.

256412190 is an abundant number, since it is smaller than the sum of its proper divisors (395177730).

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

256412190 is a wasteful number, since it uses less digits than its factorization.

256412190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502796.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 256412190 is about 16012.8757567153. The cubic root of 256412190 is about 635.3010249441.

The spelling of 256412190 in words is "two hundred fifty-six million, four hundred twelve thousand, one hundred ninety".