20519008 has 24 divisors (see below), whose sum is σ = 41791680. Its totient is φ = 9905280.

The previous prime is 20518991. The next prime is 20519027. The reversal of 20519008 is 80091502.

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, 10128 + ... + 11983.

It is an arithmetic number, because the mean of its divisors is an integer number (1741320).

Almost surely, 2^20519008 is an apocalyptic number.

It is an amenable number.

20519008 is an abundant number, since it is smaller than the sum of its proper divisors (21272672).

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

20519008 is a wasteful number, since it uses less digits than its factorization.

20519008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22150 (or 22142 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 20519008 is about 4529.7911651642. The cubic root of 20519008 is about 273.7697463568.

The spelling of 20519008 in words is "twenty million, five hundred nineteen thousand, eight".