28125488 has 20 divisors (see below), whose sum is σ = 54996480. Its totient is φ = 13932864.

The previous prime is 28125479. The next prime is 28125499. The reversal of 28125488 is 88452182.

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 3 ways as a sum of consecutive naturals, for example, 6320 + ... + 9807.

It is an arithmetic number, because the mean of its divisors is an integer number (2749824).

Almost surely, 2^28125488 is an apocalyptic number.

It is an amenable number.

28125488 is a deficient number, since it is larger than the sum of its proper divisors (26870992).

28125488 is a wasteful number, since it uses less digits than its factorization.

28125488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16244 (or 16238 counting only the distinct ones).

The product of its digits is 40960, while the sum is 38.

The square root of 28125488 is about 5303.3468677808. The cubic root of 28125488 is about 304.1118586512. Note that the first 3 decimals are identical.

The spelling of 28125488 in words is "twenty-eight million, one hundred twenty-five thousand, four hundred eighty-eight".