28914988 has 6 divisors (see below), whose sum is σ = 50601236. Its totient is φ = 14457492.

The previous prime is 28914983. The next prime is 28914997. The reversal of 28914988 is 88941982.

It is not an unprimeable number, because it can be changed into a prime (28914983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3614370 + ... + 3614377.

Almost surely, 2^28914988 is an apocalyptic number.

It is an amenable number.

28914988 is a deficient number, since it is larger than the sum of its proper divisors (21686248).

28914988 is a wasteful number, since it uses less digits than its factorization.

28914988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7228751 (or 7228749 counting only the distinct ones).

The product of its digits is 331776, while the sum is 49.

The square root of 28914988 is about 5377.2658479938. The cubic root of 28914988 is about 306.9311774766.

The spelling of 28914988 in words is "twenty-eight million, nine hundred fourteen thousand, nine hundred eighty-eight".