28645132 has 12 divisors (see below), whose sum is σ = 50180536. Its totient is φ = 14307840.

The previous prime is 28645129. The next prime is 28645159. The reversal of 28645132 is 23154682.

It is a junction number, because it is equal to n+sod(n) for n = 28645094 and 28645103.

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, 1507 + ... + 7717.

Almost surely, 2^28645132 is an apocalyptic number.

It is an amenable number.

28645132 is a deficient number, since it is larger than the sum of its proper divisors (21535404).

28645132 is a wasteful number, since it uses less digits than its factorization.

28645132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7368 (or 7366 counting only the distinct ones).

The product of its digits is 11520, while the sum is 31.

The square root of 28645132 is about 5352.1147222383. The cubic root of 28645132 is about 305.9733555054.

The spelling of 28645132 in words is "twenty-eight million, six hundred forty-five thousand, one hundred thirty-two".