20993162 has 4 divisors (see below), whose sum is σ = 31489746. Its totient is φ = 10496580.

The previous prime is 20993149. The next prime is 20993173. The reversal of 20993162 is 26139902.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 20967241 + 25921 = 4579^2 + 161^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5248289 + ... + 5248292.

Almost surely, 2^20993162 is an apocalyptic number.

20993162 is a deficient number, since it is larger than the sum of its proper divisors (10496584).

20993162 is a wasteful number, since it uses less digits than its factorization.

20993162 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10496583.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 20993162 is about 4581.8295472442. The cubic root of 20993162 is about 275.8624691118.

The spelling of 20993162 in words is "twenty million, nine hundred ninety-three thousand, one hundred sixty-two".