20156496 has 20 divisors (see below), whose sum is σ = 52071072. Its totient is φ = 6718816.

The previous prime is 20156489. The next prime is 20156501. The reversal of 20156496 is 69465102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 209916 + ... + 210011.

Almost surely, 2^20156496 is an apocalyptic number.

It is an amenable number.

20156496 is an abundant number, since it is smaller than the sum of its proper divisors (31914576).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20156496 is a wasteful number, since it uses less digits than its factorization.

20156496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419938 (or 419932 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 20156496 is about 4489.5986457589. The cubic root of 20156496 is about 272.1479155110.

The spelling of 20156496 in words is "twenty million, one hundred fifty-six thousand, four hundred ninety-six".