20860764 has 24 divisors (see below), whose sum is σ = 48778128. Its totient is φ = 6938880.

The previous prime is 20860757. The next prime is 20860781. The reversal of 20860764 is 46706802.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5124 + ... + 8244.

It is an arithmetic number, because the mean of its divisors is an integer number (2032422).

Almost surely, 2^20860764 is an apocalyptic number.

It is an amenable number.

20860764 is an abundant number, since it is smaller than the sum of its proper divisors (27917364).

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

20860764 is a wasteful number, since it uses less digits than its factorization.

20860764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3685 (or 3683 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 20860764 is about 4567.3585363972. The cubic root of 20860764 is about 275.2813165314.

The spelling of 20860764 in words is "twenty million, eight hundred sixty thousand, seven hundred sixty-four".