20253956 has 6 divisors (see below), whose sum is σ = 35444430. Its totient is φ = 10126976.

The previous prime is 20253949. The next prime is 20253971. The reversal of 20253956 is 65935202.

It can be written as a sum of positive squares in only one way, i.e., 11669056 + 8584900 = 3416^2 + 2930^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2531741 + ... + 2531748.

It is an arithmetic number, because the mean of its divisors is an integer number (5907405).

Almost surely, 2^20253956 is an apocalyptic number.

It is an amenable number.

20253956 is a deficient number, since it is larger than the sum of its proper divisors (15190474).

20253956 is a wasteful number, since it uses less digits than its factorization.

20253956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5063493 (or 5063491 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 32.

The square root of 20253956 is about 4500.4395340900. The cubic root of 20253956 is about 272.5858372236.

The spelling of 20253956 in words is "twenty million, two hundred fifty-three thousand, nine hundred fifty-six".