28874704 has 40 divisors (see below), whose sum is σ = 59996160. Its totient is φ = 13413888.

The previous prime is 28874663. The next prime is 28874707. The reversal of 28874704 is 40747882.

It is a happy number.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28874707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21937 + ... + 23215.

It is an arithmetic number, because the mean of its divisors is an integer number (1499904).

Almost surely, 2^28874704 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 28874704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29998080).

28874704 is an abundant number, since it is smaller than the sum of its proper divisors (31121456).

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

28874704 is a wasteful number, since it uses less digits than its factorization.

28874704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1387 (or 1381 counting only the distinct ones).

The product of its (nonzero) digits is 100352, while the sum is 40.

The square root of 28874704 is about 5373.5187726480. The cubic root of 28874704 is about 306.7885736710.

The spelling of 28874704 in words is "twenty-eight million, eight hundred seventy-four thousand, seven hundred four".