20704374 has 12 divisors (see below), whose sum is σ = 44859516. Its totient is φ = 6901452.

The previous prime is 20704309. The next prime is 20704379. The reversal of 20704374 is 47340702.

It is a super-2 number, since 2×20704374² = 857342205463752, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20704379) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 575104 + ... + 575139.

It is an arithmetic number, because the mean of its divisors is an integer number (3738293).

Almost surely, 2^20704374 is an apocalyptic number.

20704374 is an abundant number, since it is smaller than the sum of its proper divisors (24155142).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20704374 is a wasteful number, since it uses less digits than its factorization.

20704374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1150251 (or 1150248 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 27.

The square root of 20704374 is about 4550.2059294058. The cubic root of 20704374 is about 274.5916761086.

The spelling of 20704374 in words is "twenty million, seven hundred four thousand, three hundred seventy-four".