28578032 has 40 divisors (see below), whose sum is σ = 65329152. Its totient is φ = 11851200.

The previous prime is 28578031. The next prime is 28578047. The reversal of 28578032 is 23087582.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 28577983 and 28578001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28578031) 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, 644 + ... + 7587.

Almost surely, 2^28578032 is an apocalyptic number.

It is an amenable number.

28578032 is an abundant number, since it is smaller than the sum of its proper divisors (36751120).

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

28578032 is a wasteful number, since it uses less digits than its factorization.

28578032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8277 (or 8271 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 35.

The square root of 28578032 is about 5345.8424967445. The cubic root of 28578032 is about 305.7342588717.

The spelling of 28578032 in words is "twenty-eight million, five hundred seventy-eight thousand, thirty-two".