28993252 has 6 divisors (see below), whose sum is σ = 50738198. Its totient is φ = 14496624.

The previous prime is 28993241. The next prime is 28993267. The reversal of 28993252 is 25239982.

It can be written as a sum of positive squares in only one way, i.e., 28451556 + 541696 = 5334^2 + 736^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3624153 + ... + 3624160.

Almost surely, 2^28993252 is an apocalyptic number.

It is an amenable number.

28993252 is a deficient number, since it is larger than the sum of its proper divisors (21744946).

28993252 is a wasteful number, since it uses less digits than its factorization.

28993252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7248317 (or 7248315 counting only the distinct ones).

The product of its digits is 77760, while the sum is 40.

The square root of 28993252 is about 5384.5382346121. The cubic root of 28993252 is about 307.2078508419.

The spelling of 28993252 in words is "twenty-eight million, nine hundred ninety-three thousand, two hundred fifty-two".