28810037220 has 24 divisors (see below), whose sum is σ = 80668104384. Its totient is φ = 7682676576.

The previous prime is 28810037189. The next prime is 28810037233. The reversal of 28810037220 is 2273001882.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 240083584 + ... + 240083703.

It is an arithmetic number, because the mean of its divisors is an integer number (3361171016).

Almost surely, 2^28810037220 is an apocalyptic number.

28810037220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28810037220 is an abundant number, since it is smaller than the sum of its proper divisors (51858067164).

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

28810037220 is a wasteful number, since it uses less digits than its factorization.

28810037220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 480167299 (or 480167297 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 33.

The spelling of 28810037220 in words is "twenty-eight billion, eight hundred ten million, thirty-seven thousand, two hundred twenty".