20152256 has 14 divisors (see below), whose sum is σ = 39989760. Its totient is φ = 10076096.

The previous prime is 20152213. The next prime is 20152261. The reversal of 20152256 is 65225102.

It is a super-2 number, since 2×20152256² = 812226843779072, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157376 + ... + 157503.

Almost surely, 2^20152256 is an apocalyptic number.

It is an amenable number.

20152256 is a deficient number, since it is larger than the sum of its proper divisors (19837504).

20152256 is an equidigital number, since it uses as much as digits as its factorization.

20152256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314891 (or 314881 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 20152256 is about 4489.1264183580. The cubic root of 20152256 is about 272.1288317033.

Adding to 20152256 its reverse (65225102), we get a palindrome (85377358).

The spelling of 20152256 in words is "twenty million, one hundred fifty-two thousand, two hundred fifty-six".