28170088 has 32 divisors (see below), whose sum is σ = 56496960. Its totient is φ = 13121280.

The previous prime is 28170073. The next prime is 28170091. The reversal of 28170088 is 88007182.

It is a Harshad number since it is a multiple of its sum of digits (34).

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, 13003 + ... + 15013.

It is an arithmetic number, because the mean of its divisors is an integer number (1765530).

Almost surely, 2^28170088 is an apocalyptic number.

It is an amenable number.

28170088 is an abundant number, since it is smaller than the sum of its proper divisors (28326872).

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

28170088 is a wasteful number, since it uses less digits than its factorization.

28170088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2137 (or 2133 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 34.

The square root of 28170088 is about 5307.5500939699. The cubic root of 28170088 is about 304.2725222436.

The spelling of 28170088 in words is "twenty-eight million, one hundred seventy thousand, eighty-eight".