28930800 has 60 divisors (see below), whose sum is σ = 92678840. Its totient is φ = 7714560.

The previous prime is 28930799. The next prime is 28930813. The reversal of 28930800 is 803982.

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10855 + ... + 13254.

Almost surely, 2^28930800 is an apocalyptic number.

28930800 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28930800 is an abundant number, since it is smaller than the sum of its proper divisors (63748040).

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

28930800 is a wasteful number, since it uses less digits than its factorization.

28930800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24130 (or 24119 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 28930800 is about 5378.7359109739. The cubic root of 28930800 is about 306.9871151492.

The spelling of 28930800 in words is "twenty-eight million, nine hundred thirty thousand, eight hundred".