20883708 has 36 divisors (see below), whose sum is σ = 54495168. Its totient is φ = 6736320.

The previous prime is 20883697. The next prime is 20883743. The reversal of 20883708 is 80738802.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×20883708² = 872258519658528, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8241 + ... + 10472.

Almost surely, 2^20883708 is an apocalyptic number.

It is an amenable number.

20883708 is an abundant number, since it is smaller than the sum of its proper divisors (33611460).

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

20883708 is a wasteful number, since it uses less digits than its factorization.

20883708 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18754 (or 18749 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 20883708 is about 4569.8695823842. The cubic root of 20883708 is about 275.3822035418.

The spelling of 20883708 in words is "twenty million, eight hundred eighty-three thousand, seven hundred eight".