20404712 has 16 divisors (see below), whose sum is σ = 38631840. Its totient is φ = 10102896.

The previous prime is 20404711. The next prime is 20404717. The reversal of 20404712 is 21740402.

It is not an unprimeable number, because it can be changed into a prime (20404711) 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, 11558 + ... + 13205.

It is an arithmetic number, because the mean of its divisors is an integer number (2414490).

Almost surely, 2^20404712 is an apocalyptic number.

It is an amenable number.

20404712 is a deficient number, since it is larger than the sum of its proper divisors (18227128).

20404712 is a wasteful number, since it uses less digits than its factorization.

20404712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24872 (or 24868 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 20.

The square root of 20404712 is about 4517.1575133041. The cubic root of 20404712 is about 273.2604776410.

The spelling of 20404712 in words is "twenty million, four hundred four thousand, seven hundred twelve".