28370088 has 40 divisors (see below), whose sum is σ = 79464330. Its totient is φ = 9456480.

The previous prime is 28370077. The next prime is 28370099. The reversal of 28370088 is 88007382.

It is an interprime number because it is at equal distance from previous prime (28370077) and next prime (28370099).

It can be written as a sum of positive squares in only one way, i.e., 15539364 + 12830724 = 3942^2 + 3582^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 21243 + ... + 22538.

Almost surely, 2^28370088 is an apocalyptic number.

It is an amenable number.

28370088 is an abundant number, since it is smaller than the sum of its proper divisors (51094242).

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

28370088 is a wasteful number, since it uses less digits than its factorization.

28370088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43799 (or 43786 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 28370088 is about 5326.3578550450. The cubic root of 28370088 is about 304.9909089828.

The spelling of 28370088 in words is "twenty-eight million, three hundred seventy thousand, eighty-eight".