28870474 has 8 divisors (see below), whose sum is σ = 45188640. Its totient is φ = 13807596.

The previous prime is 28870469. The next prime is 28870477. The reversal of 28870474 is 47407882.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (28870477) 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, 313764 + ... + 313855.

It is an arithmetic number, because the mean of its divisors is an integer number (5648580).

Almost surely, 2^28870474 is an apocalyptic number.

28870474 is a deficient number, since it is larger than the sum of its proper divisors (16318166).

28870474 is a wasteful number, since it uses less digits than its factorization.

28870474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 627644.

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

The square root of 28870474 is about 5373.1251613935. The cubic root of 28870474 is about 306.7735919412.

The spelling of 28870474 in words is "twenty-eight million, eight hundred seventy thousand, four hundred seventy-four".