28765470 has 16 divisors (see below), whose sum is σ = 69037200. Its totient is φ = 7670784.

The previous prime is 28765469. The next prime is 28765483. The reversal of 28765470 is 7456782.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 479395 + ... + 479454.

It is an arithmetic number, because the mean of its divisors is an integer number (4314825).

Almost surely, 2^28765470 is an apocalyptic number.

28765470 is an abundant number, since it is smaller than the sum of its proper divisors (40271730).

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

28765470 is a wasteful number, since it uses less digits than its factorization.

28765470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 958859.

The product of its (nonzero) digits is 94080, while the sum is 39.

The square root of 28765470 is about 5363.3450383133. The cubic root of 28765470 is about 306.4012208888.

The spelling of 28765470 in words is "twenty-eight million, seven hundred sixty-five thousand, four hundred seventy".