20870852 has 12 divisors (see below), whose sum is σ = 36986880. Its totient is φ = 10303176.

The previous prime is 20870813. The next prime is 20870869. The reversal of 20870852 is 25807802.

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, 32708 + ... + 33339.

It is an arithmetic number, because the mean of its divisors is an integer number (3082240).

Almost surely, 2^20870852 is an apocalyptic number.

It is an amenable number.

20870852 is a deficient number, since it is larger than the sum of its proper divisors (16116028).

20870852 is a wasteful number, since it uses less digits than its factorization.

20870852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66130 (or 66128 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 32.

The square root of 20870852 is about 4568.4627611484. The cubic root of 20870852 is about 275.3256835609.

The spelling of 20870852 in words is "twenty million, eight hundred seventy thousand, eight hundred fifty-two".