20264072 has 8 divisors (see below), whose sum is σ = 37995150. Its totient is φ = 10132032.

The previous prime is 20264047. The next prime is 20264077. The reversal of 20264072 is 27046202.

It can be written as a sum of positive squares in only one way, i.e., 20124196 + 139876 = 4486^2 + 374^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×20264072² = 821265228042368, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20264077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1266497 + ... + 1266512.

Almost surely, 2^20264072 is an apocalyptic number.

It is an amenable number.

20264072 is a deficient number, since it is larger than the sum of its proper divisors (17731078).

20264072 is a wasteful number, since it uses less digits than its factorization.

20264072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2533015 (or 2533011 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 20264072 is about 4501.5632840159. The cubic root of 20264072 is about 272.6312113944.

The spelling of 20264072 in words is "twenty million, two hundred sixty-four thousand, seventy-two".