28170979416 has 64 divisors (see below), whose sum is σ = 81655027200. Its totient is φ = 8982049824.

The previous prime is 28170979411. The next prime is 28170979433. The reversal of 28170979416 is 61497907182.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28170979411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2830276 + ... + 2840211.

It is an arithmetic number, because the mean of its divisors is an integer number (1275859800).

Almost surely, 2^28170979416 is an apocalyptic number.

It is an amenable number.

28170979416 is an abundant number, since it is smaller than the sum of its proper divisors (53484047784).

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

28170979416 is a wasteful number, since it uses less digits than its factorization.

28170979416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5670525 (or 5670515 counting only the distinct ones).

The product of its (nonzero) digits is 1524096, while the sum is 54.

The spelling of 28170979416 in words is "twenty-eight billion, one hundred seventy million, nine hundred seventy-nine thousand, four hundred sixteen".