20401712 has 10 divisors (see below), whose sum is σ = 39528348. Its totient is φ = 10200848.

The previous prime is 20401709. The next prime is 20401721. The reversal of 20401712 is 21710402.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 637538 + ... + 637569.

Almost surely, 2^20401712 is an apocalyptic number.

It is an amenable number.

20401712 is a deficient number, since it is larger than the sum of its proper divisors (19126636).

20401712 is a wasteful number, since it uses less digits than its factorization.

20401712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1275115 (or 1275109 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 17.

The square root of 20401712 is about 4516.8254338639. The cubic root of 20401712 is about 273.2470849565.

The spelling of 20401712 in words is "twenty million, four hundred one thousand, seven hundred twelve".