28299372 has 24 divisors (see below), whose sum is σ = 66207792. Its totient is φ = 9408000.

The previous prime is 28299371. The next prime is 28299377. The reversal of 28299372 is 27399282.

It is not an unprimeable number, because it can be changed into a prime (28299371) 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, 1872 + ... + 7752.

It is an arithmetic number, because the mean of its divisors is an integer number (2758658).

Almost surely, 2^28299372 is an apocalyptic number.

It is an amenable number.

28299372 is an abundant number, since it is smaller than the sum of its proper divisors (37908420).

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

28299372 is a wasteful number, since it uses less digits than its factorization.

28299372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6289 (or 6287 counting only the distinct ones).

The product of its digits is 108864, while the sum is 42.

The square root of 28299372 is about 5319.7154059216. The cubic root of 28299372 is about 304.7372887841.

The spelling of 28299372 in words is "twenty-eight million, two hundred ninety-nine thousand, three hundred seventy-two".