28357968 has 80 divisors (see below), whose sum is σ = 76173696. Its totient is φ = 9085440.

The previous prime is 28357943. The next prime is 28357997. The reversal of 28357968 is 86975382.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 180546 + ... + 180702.

Almost surely, 2^28357968 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 28357968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38086848).

28357968 is an abundant number, since it is smaller than the sum of its proper divisors (47815728).

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

28357968 is a wasteful number, since it uses less digits than its factorization.

28357968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292 (or 286 counting only the distinct ones).

The product of its digits is 725760, while the sum is 48.

The square root of 28357968 is about 5325.2199954556. The cubic root of 28357968 is about 304.9474710217.

The spelling of 28357968 in words is "twenty-eight million, three hundred fifty-seven thousand, nine hundred sixty-eight".