28459998 has 40 divisors (see below), whose sum is σ = 72884592. Its totient is φ = 8131104.

The previous prime is 28459979. The next prime is 28460011. The reversal of 28459998 is 89995482.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 11415 + ... + 13682.

Almost surely, 2^28459998 is an apocalyptic number.

28459998 is an abundant number, since it is smaller than the sum of its proper divisors (44424594).

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

28459998 is a wasteful number, since it uses less digits than its factorization.

28459998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25118 (or 25109 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 54.

The square root of 28459998 is about 5334.7912798909. The cubic root of 28459998 is about 305.3127598862.

The spelling of 28459998 in words is "twenty-eight million, four hundred fifty-nine thousand, nine hundred ninety-eight".