28870415802 has 24 divisors (see below), whose sum is σ = 63883475136. Its totient is φ = 9418716936.

The previous prime is 28870415789. The next prime is 28870415807. The reversal of 28870415802 is 20851407882.

It is a happy number.

28870415802 is a `hidden beast` number, since 28 + 8 + 7 + 0 + 41 + 580 + 2 = 666.

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 11 ways as a sum of consecutive naturals, for example, 17062048 + ... + 17063739.

It is an arithmetic number, because the mean of its divisors is an integer number (2661811464).

Almost surely, 2^28870415802 is an apocalyptic number.

28870415802 is an abundant number, since it is smaller than the sum of its proper divisors (35013059334).

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

28870415802 is a wasteful number, since it uses less digits than its factorization.

28870415802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34125842 (or 34125839 counting only the distinct ones).

The product of its (nonzero) digits is 286720, while the sum is 45.

The spelling of 28870415802 in words is "twenty-eight billion, eight hundred seventy million, four hundred fifteen thousand, eight hundred two".