20173712 has 20 divisors (see below), whose sum is σ = 42093660. Its totient is φ = 9310848.

The previous prime is 20173709. The next prime is 20173723. The reversal of 20173712 is 21737102.

It can be written as a sum of positive squares in 2 ways, for example, as 5550736 + 14622976 = 2356^2 + 3824^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48287 + ... + 48702.

It is an arithmetic number, because the mean of its divisors is an integer number (2104683).

Almost surely, 2^20173712 is an apocalyptic number.

It is an amenable number.

20173712 is an abundant number, since it is smaller than the sum of its proper divisors (21919948).

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

20173712 is a wasteful number, since it uses less digits than its factorization.

20173712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97010 (or 97004 counting only the distinct ones).

The product of its (nonzero) digits is 588, while the sum is 23.

The square root of 20173712 is about 4491.5155571366. The cubic root of 20173712 is about 272.2253754891.

The spelling of 20173712 in words is "twenty million, one hundred seventy-three thousand, seven hundred twelve".