20955496 has 16 divisors (see below), whose sum is σ = 39492000. Its totient is φ = 10424304.

The previous prime is 20955479. The next prime is 20955497. The reversal of 20955496 is 69455902.

It is not an unprimeable number, because it can be changed into a prime (20955497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4990 + ... + 8173.

It is an arithmetic number, because the mean of its divisors is an integer number (2468250).

Almost surely, 2^20955496 is an apocalyptic number.

It is an amenable number.

20955496 is a deficient number, since it is larger than the sum of its proper divisors (18536504).

20955496 is a wasteful number, since it uses less digits than its factorization.

20955496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13368 (or 13364 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 40.

The square root of 20955496 is about 4577.7173350918. The cubic root of 20955496 is about 275.6973858930.

The spelling of 20955496 in words is "twenty million, nine hundred fifty-five thousand, four hundred ninety-six".