20718952 has 16 divisors (see below), whose sum is σ = 40537440. Its totient is φ = 9908976.

The previous prime is 20718941. The next prime is 20718953. The reversal of 20718952 is 25981702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20718953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56118 + ... + 56485.

It is an arithmetic number, because the mean of its divisors is an integer number (2533590).

Almost surely, 2^20718952 is an apocalyptic number.

It is an amenable number.

20718952 is a deficient number, since it is larger than the sum of its proper divisors (19818488).

20718952 is a wasteful number, since it uses less digits than its factorization.

20718952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112632 (or 112628 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 20718952 is about 4551.8075530497. The cubic root of 20718952 is about 274.6561078774.

The spelling of 20718952 in words is "twenty million, seven hundred eighteen thousand, nine hundred fifty-two".