10621256 has 16 divisors (see below), whose sum is σ = 19971900. Its totient is φ = 5295424.

The previous prime is 10621241. The next prime is 10621283. The reversal of 10621256 is 65212601.

It can be written as a sum of positive squares in 2 ways, for example, as 10432900 + 188356 = 3230^2 + 434^2 .

It is a super-2 number, since 2×10621256² = 225622158035072, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1406 + ... + 4818.

Almost surely, 2^10621256 is an apocalyptic number.

It is an amenable number.

10621256 is a deficient number, since it is larger than the sum of its proper divisors (9350644).

10621256 is a wasteful number, since it uses less digits than its factorization.

10621256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3808 (or 3804 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 10621256 is about 3259.0268486160. The cubic root of 10621256 is about 219.8156582522.

Adding to 10621256 its reverse (65212601), we get a palindrome (75833857).

The spelling of 10621256 in words is "ten million, six hundred twenty-one thousand, two hundred fifty-six".