28913324 has 12 divisors (see below), whose sum is σ = 55198248. Its totient is φ = 13142400.

The previous prime is 28913309. The next prime is 28913327. The reversal of 28913324 is 42331982.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (28913327) 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, 328517 + ... + 328604.

It is an arithmetic number, because the mean of its divisors is an integer number (4599854).

Almost surely, 2^28913324 is an apocalyptic number.

It is an amenable number.

28913324 is a deficient number, since it is larger than the sum of its proper divisors (26284924).

28913324 is a wasteful number, since it uses less digits than its factorization.

28913324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 657136 (or 657134 counting only the distinct ones).

The product of its digits is 10368, while the sum is 32.

The square root of 28913324 is about 5377.1111202950. Note that the first 4 decimals coincide. The cubic root of 28913324 is about 306.9252896042.

The spelling of 28913324 in words is "twenty-eight million, nine hundred thirteen thousand, three hundred twenty-four".