20793872 has 20 divisors (see below), whose sum is σ = 43951056. Its totient is φ = 9451680.

The previous prime is 20793859. The next prime is 20793931. The reversal of 20793872 is 27839702.

It is a super-2 number, since 2×20793872² = 864770225504768, which contains 22 as substring.

It is a zygodrome in base 13.

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, 58898 + ... + 59249.

Almost surely, 2^20793872 is an apocalyptic number.

20793872 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20793872 is an abundant number, since it is smaller than the sum of its proper divisors (23157184).

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

20793872 is a wasteful number, since it uses less digits than its factorization.

20793872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118166 (or 118160 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 38.

The square root of 20793872 is about 4560.0298244639. The cubic root of 20793872 is about 274.9867629992.

The spelling of 20793872 in words is "twenty million, seven hundred ninety-three thousand, eight hundred seventy-two".