28216324 has 24 divisors (see below), whose sum is σ = 51204608. Its totient is φ = 13590720.

The previous prime is 28216303. The next prime is 28216339. The reversal of 28216324 is 42361282.

It is a junction number, because it is equal to n+sod(n) for n = 28216292 and 28216301.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38449 + ... + 39175.

Almost surely, 2^28216324 is an apocalyptic number.

It is an amenable number.

28216324 is a deficient number, since it is larger than the sum of its proper divisors (22988284).

28216324 is a wasteful number, since it uses less digits than its factorization.

28216324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1075 (or 1073 counting only the distinct ones).

The product of its digits is 4608, while the sum is 28.

The square root of 28216324 is about 5311.9039900962. The cubic root of 28216324 is about 304.4389003121.

The spelling of 28216324 in words is "twenty-eight million, two hundred sixteen thousand, three hundred twenty-four".