20850472 has 16 divisors (see below), whose sum is σ = 39171060. Its totient is φ = 10404864.

The previous prime is 20850463. The next prime is 20850491. The reversal of 20850472 is 27405802.

It can be written as a sum of positive squares in 2 ways, for example, as 20848356 + 2116 = 4566^2 + 46^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20850472.

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, 2358 + ... + 6874.

Almost surely, 2^20850472 is an apocalyptic number.

It is an amenable number.

20850472 is a deficient number, since it is larger than the sum of its proper divisors (18320588).

20850472 is a wasteful number, since it uses less digits than its factorization.

20850472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5100 (or 5096 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 28.

The square root of 20850472 is about 4566.2317067797. The cubic root of 20850472 is about 275.2360375670.

The spelling of 20850472 in words is "twenty million, eight hundred fifty thousand, four hundred seventy-two".