28353900 has 36 divisors (see below), whose sum is σ = 82038152. Its totient is φ = 7560960.

The previous prime is 28353881. The next prime is 28353911. The reversal of 28353900 is 935382.

It is a happy number.

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, 46957 + ... + 47556.

Almost surely, 2^28353900 is an apocalyptic number.

28353900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28353900 is an abundant number, since it is smaller than the sum of its proper divisors (53684252).

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

28353900 is a wasteful number, since it uses less digits than its factorization.

28353900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94530 (or 94523 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 28353900 is about 5324.8380257056. The cubic root of 28353900 is about 304.9328885755.

The spelling of 28353900 in words is "twenty-eight million, three hundred fifty-three thousand, nine hundred".