28577428860 has 48 divisors (see below), whose sum is σ = 81968437152. Its totient is φ = 7434777600.

The previous prime is 28577428823. The next prime is 28577428871. The reversal of 28577428860 is 6882477582.

It is a self number, because there is not a number n which added to its sum of digits gives 28577428860.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5805961 + ... + 5810880.

It is an arithmetic number, because the mean of its divisors is an integer number (1707675774).

Almost surely, 2^28577428860 is an apocalyptic number.

28577428860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28577428860 is an abundant number, since it is smaller than the sum of its proper divisors (53391008292).

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

28577428860 is a wasteful number, since it uses less digits than its factorization.

28577428860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11616894 (or 11616892 counting only the distinct ones).

The product of its (nonzero) digits is 12042240, while the sum is 57.

The spelling of 28577428860 in words is "twenty-eight billion, five hundred seventy-seven million, four hundred twenty-eight thousand, eight hundred sixty".