28177116 has 48 divisors (see below), whose sum is σ = 74850048. Its totient is φ = 8166400.

The previous prime is 28177099. The next prime is 28177129. The reversal of 28177116 is 61177182.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1605 + ... + 7676.

It is an arithmetic number, because the mean of its divisors is an integer number (1559376).

Almost surely, 2^28177116 is an apocalyptic number.

It is an amenable number.

28177116 is an abundant number, since it is smaller than the sum of its proper divisors (46672932).

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

28177116 is a wasteful number, since it uses less digits than its factorization.

28177116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9322 (or 9320 counting only the distinct ones).

The product of its digits is 4704, while the sum is 33.

The square root of 28177116 is about 5308.2121283913. The cubic root of 28177116 is about 304.2978238978.

The spelling of 28177116 in words is "twenty-eight million, one hundred seventy-seven thousand, one hundred sixteen".