20885652 has 36 divisors (see below), whose sum is σ = 53347476. Its totient is φ = 6888960.

The previous prime is 20885629. The next prime is 20885663. The reversal of 20885652 is 25658802.

It can be written as a sum of positive squares in 2 ways, for example, as 3944196 + 16941456 = 1986^2 + 4116^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 502 + ... + 6482.

Almost surely, 2^20885652 is an apocalyptic number.

It is an amenable number.

20885652 is an abundant number, since it is smaller than the sum of its proper divisors (32461824).

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

20885652 is a wasteful number, since it uses less digits than its factorization.

20885652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6088 (or 6083 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 36.

The square root of 20885652 is about 4570.0822749706. The cubic root of 20885652 is about 275.3907481035.

The spelling of 20885652 in words is "twenty million, eight hundred eighty-five thousand, six hundred fifty-two".