28745370 has 48 divisors (see below), whose sum is σ = 77156352. Its totient is φ = 7417440.

The previous prime is 28745363. The next prime is 28745389. The reversal of 28745370 is 7354782.

28745370 is a `hidden beast` number, since 287 + 4 + 5 + 370 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2362 + ... + 7941.

It is an arithmetic number, because the mean of its divisors is an integer number (1607424).

Almost surely, 2^28745370 is an apocalyptic number.

28745370 is an abundant number, since it is smaller than the sum of its proper divisors (48410982).

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

28745370 is a wasteful number, since it uses less digits than its factorization.

28745370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10347 (or 10344 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 36.

The square root of 28745370 is about 5361.4708802716. The cubic root of 28745370 is about 306.3298378549.

The spelling of 28745370 in words is "twenty-eight million, seven hundred forty-five thousand, three hundred seventy".