20712450 has 48 divisors (see below), whose sum is σ = 56041056. Its totient is φ = 5020800.

The previous prime is 20712449. The next prime is 20712469. The reversal of 20712450 is 5421702.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4627 + ... + 7926.

It is an arithmetic number, because the mean of its divisors is an integer number (1167522).

Almost surely, 2^20712450 is an apocalyptic number.

20712450 is an abundant number, since it is smaller than the sum of its proper divisors (35328606).

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

20712450 is a wasteful number, since it uses less digits than its factorization.

20712450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12579 (or 12574 counting only the distinct ones).

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

The square root of 20712450 is about 4551.0932752472. The cubic root of 20712450 is about 274.6273741066.

The spelling of 20712450 in words is "twenty million, seven hundred twelve thousand, four hundred fifty".