28250800 has 30 divisors (see below), whose sum is σ = 67873508. Its totient is φ = 11300160.

The previous prime is 28250779. The next prime is 28250809. The reversal of 28250800 is 805282.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (28250809) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 34914 + ... + 35713.

Almost surely, 2^28250800 is an apocalyptic number.

28250800 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28250800 is an abundant number, since it is smaller than the sum of its proper divisors (39622708).

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

28250800 is a wasteful number, since it uses less digits than its factorization.

28250800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70645 (or 70634 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 25.

The square root of 28250800 is about 5315.1481635040. The cubic root of 28250800 is about 304.5628423212.

The spelling of 28250800 in words is "twenty-eight million, two hundred fifty thousand, eight hundred".