20968760 has 16 divisors (see below), whose sum is σ = 47179800. Its totient is φ = 8387488.

The previous prime is 20968699. The next prime is 20968771. The reversal of 20968760 is 6786902.

It is a congruent number.

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, 262070 + ... + 262149.

Almost surely, 2^20968760 is an apocalyptic number.

20968760 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20968760 is an abundant number, since it is smaller than the sum of its proper divisors (26211040).

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

20968760 is a wasteful number, since it uses less digits than its factorization.

20968760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 524230 (or 524226 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 20968760 is about 4579.1658629056. The cubic root of 20968760 is about 275.7555421376.

The spelling of 20968760 in words is "twenty million, nine hundred sixty-eight thousand, seven hundred sixty".