28870415808 has 56 divisors (see below), whose sum is σ = 82262185488. Its totient is φ = 8883204096.

The previous prime is 28870415807. The next prime is 28870415837. The reversal of 28870415808 is 80851407882.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28870415807) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5780841 + ... + 5785832.

It is an arithmetic number, because the mean of its divisors is an integer number (1468967598).

Almost surely, 2^28870415808 is an apocalyptic number.

It is an amenable number.

28870415808 is an abundant number, since it is smaller than the sum of its proper divisors (53391769680).

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

28870415808 is a wasteful number, since it uses less digits than its factorization.

28870415808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11566701 (or 11566691 counting only the distinct ones).

The product of its (nonzero) digits is 1146880, while the sum is 51.

The spelling of 28870415808 in words is "twenty-eight billion, eight hundred seventy million, four hundred fifteen thousand, eight hundred eight".