20633572 has 6 divisors (see below), whose sum is σ = 36108758. Its totient is φ = 10316784.

The previous prime is 20633567. The next prime is 20633573. The reversal of 20633572 is 27533602.

It can be written as a sum of positive squares in only one way, i.e., 13147876 + 7485696 = 3626^2 + 2736^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20633572.

It is not an unprimeable number, because it can be changed into a prime (20633573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2579193 + ... + 2579200.

Almost surely, 2^20633572 is an apocalyptic number.

It is an amenable number.

20633572 is a deficient number, since it is larger than the sum of its proper divisors (15475186).

20633572 is a wasteful number, since it uses less digits than its factorization.

20633572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5158397 (or 5158395 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 28.

The square root of 20633572 is about 4542.4191792480. The cubic root of 20633572 is about 274.2783148942.

The spelling of 20633572 in words is "twenty million, six hundred thirty-three thousand, five hundred seventy-two".