28074432 has 28 divisors (see below), whose sum is σ = 74280776. Its totient is φ = 9358080.

The previous prime is 28074391. The next prime is 28074481. The reversal of 28074432 is 23447082.

It is a self number, because there is not a number n which added to its sum of digits gives 28074432.

It is a congruent number.

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, 72919 + ... + 73302.

Almost surely, 2^28074432 is an apocalyptic number.

It is an amenable number.

28074432 is an abundant number, since it is smaller than the sum of its proper divisors (46206344).

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

28074432 is a wasteful number, since it uses less digits than its factorization.

28074432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146236 (or 146226 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 30.

The square root of 28074432 is about 5298.5311172060. The cubic root of 28074432 is about 303.9277298196.

The spelling of 28074432 in words is "twenty-eight million, seventy-four thousand, four hundred thirty-two".