28572432 has 40 divisors (see below), whose sum is σ = 84357696. Its totient is φ = 8163456.

The previous prime is 28572413. The next prime is 28572437. The reversal of 28572432 is 23427582.

It is a junction number, because it is equal to n+sod(n) for n = 28572393 and 28572402.

It is not an unprimeable number, because it can be changed into a prime (28572437) 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, 42183 + ... + 42854.

Almost surely, 2^28572432 is an apocalyptic number.

It is an amenable number.

28572432 is an abundant number, since it is smaller than the sum of its proper divisors (55785264).

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

28572432 is a wasteful number, since it uses less digits than its factorization.

28572432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85055 (or 85049 counting only the distinct ones).

The product of its digits is 26880, while the sum is 33.

The square root of 28572432 is about 5345.3186995726. The cubic root of 28572432 is about 305.7142875443.

It can be divided in two parts, 2857243 and 2, that added together give a triangular number (2857245 = T₂₃₉₀).

The spelling of 28572432 in words is "twenty-eight million, five hundred seventy-two thousand, four hundred thirty-two".