28333224 has 24 divisors (see below), whose sum is σ = 76736010. Its totient is φ = 9444384.

The previous prime is 28333223. The next prime is 28333229. The reversal of 28333224 is 42233382.

It can be written as a sum of positive squares in only one way, i.e., 26936100 + 1397124 = 5190^2 + 1182^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (28333223) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 196687 + ... + 196830.

Almost surely, 2^28333224 is an apocalyptic number.

28333224 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

28333224 is an abundant number, since it is smaller than the sum of its proper divisors (48402786).

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

28333224 is a wasteful number, since it uses less digits than its factorization.

28333224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393529 (or 393522 counting only the distinct ones).

The product of its digits is 6912, while the sum is 27.

The square root of 28333224 is about 5322.8962041355. The cubic root of 28333224 is about 304.8587503260.

The spelling of 28333224 in words is "twenty-eight million, three hundred thirty-three thousand, two hundred twenty-four".