28368957 has 8 divisors (see below), whose sum is σ = 39816160. Its totient is φ = 17917200.

The previous prime is 28368941. The next prime is 28368961. The reversal of 28368957 is 75986382.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28368957 - 2⁴ = 28368941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28388957) 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, 248794 + ... + 248907.

It is an arithmetic number, because the mean of its divisors is an integer number (4977020).

Almost surely, 2^28368957 is an apocalyptic number.

It is an amenable number.

28368957 is a deficient number, since it is larger than the sum of its proper divisors (11447203).

28368957 is a wasteful number, since it uses less digits than its factorization.

28368957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 497723.

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

The square root of 28368957 is about 5326.2516838768. The cubic root of 28368957 is about 304.9868560133.

The spelling of 28368957 in words is "twenty-eight million, three hundred sixty-eight thousand, nine hundred fifty-seven".