28957368 has 128 divisors (see below), whose sum is σ = 87091200. Its totient is φ = 7920000.

The previous prime is 28957351. The next prime is 28957373. The reversal of 28957368 is 86375982.

It is a super-2 number, since 2×28957368² = 1677058322974848, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 115243 + ... + 115493.

It is an arithmetic number, because the mean of its divisors is an integer number (680400).

Almost surely, 2^28957368 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 28957368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43545600).

28957368 is an abundant number, since it is smaller than the sum of its proper divisors (58133832).

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

28957368 is a wasteful number, since it uses less digits than its factorization.

28957368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313 (or 309 counting only the distinct ones).

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

The square root of 28957368 is about 5381.2050694988. The cubic root of 28957368 is about 307.0810581478.

The spelling of 28957368 in words is "twenty-eight million, nine hundred fifty-seven thousand, three hundred sixty-eight".