20955536 has 30 divisors (see below), whose sum is σ = 47231910. Its totient is φ = 8980608.

The previous prime is 20955503. The next prime is 20955559. The reversal of 20955536 is 63555902.

It can be written as a sum of positive squares in only one way, i.e., 18835600 + 2119936 = 4340^2 + 1456^2 .

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 20955496 and 20955505.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12581 + ... + 14148.

It is an arithmetic number, because the mean of its divisors is an integer number (1574397).

Almost surely, 2^20955536 is an apocalyptic number.

It is an amenable number.

20955536 is an abundant number, since it is smaller than the sum of its proper divisors (26276374).

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

20955536 is a wasteful number, since it uses less digits than its factorization.

20955536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26751 (or 26738 counting only the distinct ones).

The product of its (nonzero) digits is 40500, while the sum is 35.

The square root of 20955536 is about 4577.7217040794. The cubic root of 20955536 is about 275.6975613106.

The spelling of 20955536 in words is "twenty million, nine hundred fifty-five thousand, five hundred thirty-six".