28908866154 has 16 divisors (see below), whose sum is σ = 66077408448. Its totient is φ = 8259676032.

The previous prime is 28908866123. The next prime is 28908866213. The reversal of 28908866154 is 45166880982.

It is a happy number.

28908866154 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 28908866094 and 28908866103.

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, 344153127 + ... + 344153210.

It is an arithmetic number, because the mean of its divisors is an integer number (4129838028).

Almost surely, 2^28908866154 is an apocalyptic number.

28908866154 is an abundant number, since it is smaller than the sum of its proper divisors (37168542294).

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

28908866154 is a wasteful number, since it uses less digits than its factorization.

28908866154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 688306349.

The product of its (nonzero) digits is 6635520, while the sum is 57.

The spelling of 28908866154 in words is "twenty-eight billion, nine hundred eight million, eight hundred sixty-six thousand, one hundred fifty-four".