256662046 has 16 divisors (see below), whose sum is σ = 387763200. Its totient is φ = 127411488.

The previous prime is 256662023. The next prime is 256662067. The reversal of 256662046 is 640266652.

It is a happy number.

It is a super-2 number, since 2×256662046² = 131750811713812232, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 256661996 and 256662014.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 200035 + ... + 201313.

It is an arithmetic number, because the mean of its divisors is an integer number (24235200).

Almost surely, 2^256662046 is an apocalyptic number.

256662046 is a deficient number, since it is larger than the sum of its proper divisors (131101154).

256662046 is a wasteful number, since it uses less digits than its factorization.

256662046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1923.

The product of its (nonzero) digits is 103680, while the sum is 37.

The square root of 256662046 is about 16020.6755787638. The cubic root of 256662046 is about 635.5073103036.

The spelling of 256662046 in words is "two hundred fifty-six million, six hundred sixty-two thousand, forty-six".