20879502 has 32 divisors (see below), whose sum is σ = 50533632. Its totient is φ = 5614464.

The previous prime is 20879501. The next prime is 20879513. The reversal of 20879502 is 20597802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20879501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13908 + ... + 15335.

It is an arithmetic number, because the mean of its divisors is an integer number (1579176).

Almost surely, 2^20879502 is an apocalyptic number.

20879502 is an abundant number, since it is smaller than the sum of its proper divisors (29654130).

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

20879502 is a wasteful number, since it uses less digits than its factorization.

20879502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29272.

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 20879502 is about 4569.4093710238. The cubic root of 20879502 is about 275.3637148820.

The spelling of 20879502 in words is "twenty million, eight hundred seventy-nine thousand, five hundred two".