20029892508 has 36 divisors (see below), whose sum is σ = 51200014320. Its totient is φ = 6601611456.

The previous prime is 20029892459. The next prime is 20029892513. The reversal of 20029892508 is 80529892002.

It is a tau number, because it is divible by the number of its divisors (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, 3122560 + ... + 3128967.

It is an arithmetic number, because the mean of its divisors is an integer number (1422222620).

Almost surely, 2^20029892508 is an apocalyptic number.

It is an amenable number.

20029892508 is an abundant number, since it is smaller than the sum of its proper divisors (31170121812).

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

20029892508 is a wasteful number, since it uses less digits than its factorization.

20029892508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6251626 (or 6251621 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 45.

The spelling of 20029892508 in words is "twenty billion, twenty-nine million, eight hundred ninety-two thousand, five hundred eight".