28740912 has 40 divisors (see below), whose sum is σ = 74523504. Its totient is φ = 9544704.

The previous prime is 28740889. The next prime is 28740919. The reversal of 28740912 is 21904782.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (28740919) 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, 14068 + ... + 15980.

Almost surely, 2^28740912 is an apocalyptic number.

It is an amenable number.

28740912 is an abundant number, since it is smaller than the sum of its proper divisors (45782592).

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

28740912 is a wasteful number, since it uses less digits than its factorization.

28740912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2237 (or 2231 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 28740912 is about 5361.0551200300. The cubic root of 28740912 is about 306.3140012289.

The spelling of 28740912 in words is "twenty-eight million, seven hundred forty thousand, nine hundred twelve".