28992032 has 24 divisors (see below), whose sum is σ = 57418956. Its totient is φ = 14409472.

The previous prime is 28992031. The next prime is 28992049. The reversal of 28992032 is 23029982.

It can be written as a sum of positive squares in 2 ways, for example, as 23775376 + 5216656 = 4876^2 + 2284^2 .

It is a junction number, because it is equal to n+sod(n) for n = 28991983 and 28992001.

It is not an unprimeable number, because it can be changed into a prime (28992031) 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, 2918 + ... + 8154.

Almost surely, 2^28992032 is an apocalyptic number.

It is an amenable number.

28992032 is a deficient number, since it is larger than the sum of its proper divisors (28426924).

28992032 is a wasteful number, since it uses less digits than its factorization.

28992032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5420 (or 5412 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 28992032 is about 5384.4249460829. The cubic root of 28992032 is about 307.2035418067.

The spelling of 28992032 in words is "twenty-eight million, nine hundred ninety-two thousand, thirty-two".