28507368 has 64 divisors (see below), whose sum is σ = 76282560. Its totient is φ = 8846336.

The previous prime is 28507363. The next prime is 28507393. The reversal of 28507368 is 86370582.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (28507363) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43330 + ... + 43982.

It is an arithmetic number, because the mean of its divisors is an integer number (1191915).

Almost surely, 2^28507368 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28507368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38141280).

28507368 is an abundant number, since it is smaller than the sum of its proper divisors (47775192).

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

28507368 is a wasteful number, since it uses less digits than its factorization.

28507368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 786 (or 782 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 39.

The square root of 28507368 is about 5339.2291578467. The cubic root of 28507368 is about 305.4820577286.

The spelling of 28507368 in words is "twenty-eight million, five hundred seven thousand, three hundred sixty-eight".