28718574 has 8 divisors (see below), whose sum is σ = 57437160. Its totient is φ = 9572856.

The previous prime is 28718567. The next prime is 28718579. The reversal of 28718574 is 47581782.

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

28718574 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28718579) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2393209 + ... + 2393220.

It is an arithmetic number, because the mean of its divisors is an integer number (7179645).

Almost surely, 2^28718574 is an apocalyptic number.

28718574 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

28718574 is a wasteful number, since it uses less digits than its factorization.

28718574 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4786434.

The product of its digits is 125440, while the sum is 42.

The square root of 28718574 is about 5358.9713565198. The cubic root of 28718574 is about 306.2346229125.

It can be divided in two parts, 28718 and 574, that added together give a palindrome (29292).

The spelling of 28718574 in words is "twenty-eight million, seven hundred eighteen thousand, five hundred seventy-four".