28224974 has 8 divisors (see below), whose sum is σ = 43370208. Its totient is φ = 13768240.

The previous prime is 28224971. The next prime is 28225003. The reversal of 28224974 is 47942282.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28224971) 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, 172022 + ... + 172185.

It is an arithmetic number, because the mean of its divisors is an integer number (5421276).

Almost surely, 2^28224974 is an apocalyptic number.

28224974 is a deficient number, since it is larger than the sum of its proper divisors (15145234).

28224974 is a wasteful number, since it uses less digits than its factorization.

28224974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344250.

The product of its digits is 64512, while the sum is 38.

The square root of 28224974 is about 5312.7181366980. The cubic root of 28224974 is about 304.4700067434.

The spelling of 28224974 in words is "twenty-eight million, two hundred twenty-four thousand, nine hundred seventy-four".