28752830 has 16 divisors (see below), whose sum is σ = 51816240. Its totient is φ = 11487552.

The previous prime is 28752827. The next prime is 28752847. The reversal of 28752830 is 3825782.

It is a happy number.

It is a Curzon number.

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, 15197 + ... + 16983.

It is an arithmetic number, because the mean of its divisors is an integer number (3238515).

Almost surely, 2^28752830 is an apocalyptic number.

28752830 is a deficient number, since it is larger than the sum of its proper divisors (23063410).

28752830 is a wasteful number, since it uses less digits than its factorization.

28752830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3403.

The product of its (nonzero) digits is 26880, while the sum is 35.

The square root of 28752830 is about 5362.1665397486. The cubic root of 28752830 is about 306.3563351416.

The spelling of 28752830 in words is "twenty-eight million, seven hundred fifty-two thousand, eight hundred thirty".