256190612 has 12 divisors (see below), whose sum is σ = 474706260. Its totient is φ = 120560256.

The previous prime is 256190609. The next prime is 256190617. The reversal of 256190612 is 216091652.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 178115716 + 78074896 = 13346^2 + 8836^2 .

It is a super-3 number, since 3×256190612³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256190617) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1883687 + ... + 1883822.

It is an arithmetic number, because the mean of its divisors is an integer number (39558855).

Almost surely, 2^256190612 is an apocalyptic number.

It is an amenable number.

256190612 is a deficient number, since it is larger than the sum of its proper divisors (218515648).

256190612 is a wasteful number, since it uses less digits than its factorization.

256190612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3767530 (or 3767528 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 256190612 is about 16005.9555166194. The cubic root of 256190612 is about 635.1179742366.

The spelling of 256190612 in words is "two hundred fifty-six million, one hundred ninety thousand, six hundred twelve".