28995500 has 24 divisors (see below), whose sum is σ = 63327264. Its totient is φ = 11598000.

The previous prime is 28995481. The next prime is 28995503. The reversal of 28995500 is 559982.

It is a happy number.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (28995503) 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, 28496 + ... + 29495.

It is an arithmetic number, because the mean of its divisors is an integer number (2638636).

Almost surely, 2^28995500 is an apocalyptic number.

28995500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28995500 is an abundant number, since it is smaller than the sum of its proper divisors (34331764).

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

28995500 is a wasteful number, since it uses less digits than its factorization.

28995500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58010 (or 57998 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 38.

The square root of 28995500 is about 5384.7469764140. The cubic root of 28995500 is about 307.2157904526.

The spelling of 28995500 in words is "twenty-eight million, nine hundred ninety-five thousand, five hundred".