28757412 has 36 divisors (see below), whose sum is σ = 76520080. Its totient is φ = 9081072.

The previous prime is 28757389. The next prime is 28757419. The reversal of 28757412 is 21475782.

28757412 is a `hidden beast` number, since 2 + 87 + 574 + 1 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (28757419) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20338 + ... + 21705.

Almost surely, 2^28757412 is an apocalyptic number.

It is an amenable number.

28757412 is an abundant number, since it is smaller than the sum of its proper divisors (47762668).

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

28757412 is a wasteful number, since it uses less digits than its factorization.

28757412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42072 (or 42067 counting only the distinct ones).

The product of its digits is 31360, while the sum is 36.

The square root of 28757412 is about 5362.5937754038. The cubic root of 28757412 is about 306.3726077446.

The spelling of 28757412 in words is "twenty-eight million, seven hundred fifty-seven thousand, four hundred twelve".