28716432 has 40 divisors (see below), whose sum is σ = 75914784. Its totient is φ = 9348864.

The previous prime is 28716431. The next prime is 28716449. The reversal of 28716432 is 23461782.

It is a junction number, because it is equal to n+sod(n) for n = 28716393 and 28716402.

It is not an unprimeable number, because it can be changed into a prime (28716431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4893 + ... + 9020.

Almost surely, 2^28716432 is an apocalyptic number.

It is an amenable number.

28716432 is an abundant number, since it is smaller than the sum of its proper divisors (47198352).

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

28716432 is a wasteful number, since it uses less digits than its factorization.

28716432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13967 (or 13961 counting only the distinct ones).

The product of its digits is 16128, while the sum is 33.

The square root of 28716432 is about 5358.7715010066. The cubic root of 28716432 is about 306.2270091307.

The spelling of 28716432 in words is "twenty-eight million, seven hundred sixteen thousand, four hundred thirty-two".