28310088 has 32 divisors (see below), whose sum is σ = 71978400. Its totient is φ = 9276288.

The previous prime is 28310077. The next prime is 28310089. The reversal of 28310088 is 88001382.

It is a super-2 number, since 2×28310088² = 1602922165135488, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28310089) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8581 + ... + 11412.

It is an arithmetic number, because the mean of its divisors is an integer number (2249325).

Almost surely, 2^28310088 is an apocalyptic number.

It is an amenable number.

28310088 is an abundant number, since it is smaller than the sum of its proper divisors (43668312).

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

28310088 is a wasteful number, since it uses less digits than its factorization.

28310088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20061 (or 20057 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 30.

The square root of 28310088 is about 5320.7225073292. The cubic root of 28310088 is about 304.7757484442.

The spelling of 28310088 in words is "twenty-eight million, three hundred ten thousand, eighty-eight".