28750120 has 32 divisors (see below), whose sum is σ = 73929600. Its totient is φ = 9857088.

The previous prime is 28750109. The next prime is 28750123. The reversal of 28750120 is 2105782.

It is not an unprimeable number, because it can be changed into a prime (28750123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51060 + ... + 51619.

It is an arithmetic number, because the mean of its divisors is an integer number (2310300).

Almost surely, 2^28750120 is an apocalyptic number.

28750120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28750120 is an abundant number, since it is smaller than the sum of its proper divisors (45179480).

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

28750120 is a wasteful number, since it uses less digits than its factorization.

28750120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102697 (or 102693 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 25.

The square root of 28750120 is about 5361.9138374278. The cubic root of 28750120 is about 306.3467099817.

The spelling of 28750120 in words is "twenty-eight million, seven hundred fifty thousand, one hundred twenty".