20802774 has 16 divisors (see below), whose sum is σ = 41766912. Its totient is φ = 6907368.

The previous prime is 20802757. The next prime is 20802779. The reversal of 20802774 is 47720802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20802779) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5014 + ... + 8169.

It is an arithmetic number, because the mean of its divisors is an integer number (2610432).

Almost surely, 2^20802774 is an apocalyptic number.

20802774 is an abundant number, since it is smaller than the sum of its proper divisors (20964138).

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

20802774 is a wasteful number, since it uses less digits than its factorization.

20802774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13451.

The product of its (nonzero) digits is 6272, while the sum is 30.

The square root of 20802774 is about 4561.0058101257. The cubic root of 20802774 is about 275.0259986439.

The spelling of 20802774 in words is "twenty million, eight hundred two thousand, seven hundred seventy-four".