20916652 has 12 divisors (see below), whose sum is σ = 36645336. Its totient is φ = 10446560.

The previous prime is 20916589. The next prime is 20916673. The reversal of 20916652 is 25661902.

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, 1968 + ... + 6760.

It is an arithmetic number, because the mean of its divisors is an integer number (3053778).

Almost surely, 2^20916652 is an apocalyptic number.

It is an amenable number.

20916652 is a deficient number, since it is larger than the sum of its proper divisors (15728684).

20916652 is a wasteful number, since it uses less digits than its factorization.

20916652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5888 (or 5886 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 20916652 is about 4573.4726412213. The cubic root of 20916652 is about 275.5269323903.

It can be divided in two parts, 209 and 16652, that added together give a palindrome (16861).

The spelling of 20916652 in words is "twenty million, nine hundred sixteen thousand, six hundred fifty-two".