28924332 has 12 divisors (see below), whose sum is σ = 67490136. Its totient is φ = 9641440.

The previous prime is 28924321. The next prime is 28924381. The reversal of 28924332 is 23342982.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 28924293 and 28924302.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1205169 + ... + 1205192.

It is an arithmetic number, because the mean of its divisors is an integer number (5624178).

Almost surely, 2^28924332 is an apocalyptic number.

It is an amenable number.

28924332 is an abundant number, since it is smaller than the sum of its proper divisors (38565804).

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

28924332 is a wasteful number, since it uses less digits than its factorization.

28924332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2410368 (or 2410366 counting only the distinct ones).

The product of its digits is 20736, while the sum is 33.

The square root of 28924332 is about 5378.1346208514. The cubic root of 28924332 is about 306.9642359495.

The spelling of 28924332 in words is "twenty-eight million, nine hundred twenty-four thousand, three hundred thirty-two".