28447512 has 16 divisors (see below), whose sum is σ = 71118840. Its totient is φ = 9482496.

The previous prime is 28447493. The next prime is 28447537. The reversal of 28447512 is 21574482.

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, 592633 + ... + 592680.

Almost surely, 2^28447512 is an apocalyptic number.

It is an amenable number.

28447512 is an abundant number, since it is smaller than the sum of its proper divisors (42671328).

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

28447512 is a wasteful number, since it uses less digits than its factorization.

28447512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1185322 (or 1185318 counting only the distinct ones).

The product of its digits is 17920, while the sum is 33.

The square root of 28447512 is about 5333.6209089136. The cubic root of 28447512 is about 305.2681043110.

The spelling of 28447512 in words is "twenty-eight million, four hundred forty-seven thousand, five hundred twelve".