28154828977 has 48 divisors (see below), whose sum is σ = 33136024320. Its totient is φ = 23851520000.

The previous prime is 28154828939. The next prime is 28154829007. The reversal of 28154828977 is 77982845182.

It is not a de Polignac number, because 28154828977 - 2²⁷ = 28020611249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28154828777) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 17584977 + ... + 17586577.

It is an arithmetic number, because the mean of its divisors is an integer number (690333840).

Almost surely, 2^28154828977 is an apocalyptic number.

It is an amenable number.

28154828977 is a deficient number, since it is larger than the sum of its proper divisors (4981195343).

28154828977 is a wasteful number, since it uses less digits than its factorization.

28154828977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1806 (or 1795 counting only the distinct ones).

The product of its digits is 18063360, while the sum is 61.

The spelling of 28154828977 in words is "twenty-eight billion, one hundred fifty-four million, eight hundred twenty-eight thousand, nine hundred seventy-seven".