28660032 has 42 divisors (see below), whose sum is σ = 82150458. Its totient is φ = 9553152.

The previous prime is 28660031. The next prime is 28660043. The reversal of 28660032 is 23006682.

28660032 is a `hidden beast` number, since 28 + 6 + 600 + 32 = 666.

It can be written as a sum of positive squares in only one way, i.e., 15872256 + 12787776 = 3984^2 + 3576^2 .

It is a junction number, because it is equal to n+sod(n) for n = 28659978 and 28660005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28660031) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 24303 + ... + 25454.

Almost surely, 2^28660032 is an apocalyptic number.

It is an amenable number.

28660032 is an abundant number, since it is smaller than the sum of its proper divisors (53490426).

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

28660032 is a wasteful number, since it uses less digits than its factorization.

28660032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49775 (or 49762 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 28660032 is about 5353.5065144258. The cubic root of 28660032 is about 306.0263978252.

The spelling of 28660032 in words is "twenty-eight million, six hundred sixty thousand, thirty-two".