20150880828 has 24 divisors (see below), whose sum is σ = 50635547088. Its totient is φ = 6200270976.

The previous prime is 20150880797. The next prime is 20150880853. The reversal of 20150880828 is 82808805102.

It is a self number, because there is not a number n which added to its sum of digits gives 20150880828.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64586001 + ... + 64586312.

It is an arithmetic number, because the mean of its divisors is an integer number (2109814462).

Almost surely, 2^20150880828 is an apocalyptic number.

It is an amenable number.

20150880828 is an abundant number, since it is smaller than the sum of its proper divisors (30484666260).

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

20150880828 is a wasteful number, since it uses less digits than its factorization.

20150880828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129172333 (or 129172331 counting only the distinct ones).

The product of its (nonzero) digits is 81920, while the sum is 42.

The spelling of 20150880828 in words is "twenty billion, one hundred fifty million, eight hundred eighty thousand, eight hundred twenty-eight".