28265700 has 36 divisors (see below), whose sum is σ = 81782960. Its totient is φ = 7537440.

The previous prime is 28265693. The next prime is 28265701. The reversal of 28265700 is 756282.

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

It is not an unprimeable number, because it can be changed into a prime (28265701) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 46810 + ... + 47409.

Almost surely, 2^28265700 is an apocalyptic number.

28265700 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28265700 is an abundant number, since it is smaller than the sum of its proper divisors (53517260).

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

28265700 is a wasteful number, since it uses less digits than its factorization.

28265700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94236 (or 94229 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 28265700 is about 5316.5496329857. The cubic root of 28265700 is about 304.6163769559.

The spelling of 28265700 in words is "twenty-eight million, two hundred sixty-five thousand, seven hundred".