20704512 has 36 divisors (see below), whose sum is σ = 55106240. Its totient is φ = 6901248.

The previous prime is 20704507. The next prime is 20704513. The reversal of 20704512 is 21540702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20704513) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12712 + ... + 14247.

Almost surely, 2^20704512 is an apocalyptic number.

It is an amenable number.

20704512 is an abundant number, since it is smaller than the sum of its proper divisors (34401728).

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

20704512 is an equidigital number, since it uses as much as digits as its factorization.

20704512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26978 (or 26964 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 21.

The square root of 20704512 is about 4550.2210935294. The cubic root of 20704512 is about 274.5922861821.

The spelling of 20704512 in words is "twenty million, seven hundred four thousand, five hundred twelve".