28718375 has 32 divisors (see below), whose sum is σ = 42771456. Its totient is φ = 18823200.

The previous prime is 28718353. The next prime is 28718387. The reversal of 28718375 is 57381782.

It is not a de Polignac number, because 28718375 - 2⁶ = 28718311 is a prime.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

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, 19412 + ... + 20838.

It is an arithmetic number, because the mean of its divisors is an integer number (1336608).

Almost surely, 2^28718375 is an apocalyptic number.

28718375 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28718375 is a deficient number, since it is larger than the sum of its proper divisors (14053081).

28718375 is a wasteful number, since it uses less digits than its factorization.

28718375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1472 (or 1462 counting only the distinct ones).

The product of its digits is 94080, while the sum is 41.

The square root of 28718375 is about 5358.9527894916. The cubic root of 28718375 is about 306.2339155790.

The spelling of 28718375 in words is "twenty-eight million, seven hundred eighteen thousand, three hundred seventy-five".