28804730 has 8 divisors (see below), whose sum is σ = 51848532. Its totient is φ = 11521888.

The previous prime is 28804709. The next prime is 28804739. The reversal of 28804730 is 3740882.

It can be written as a sum of positive squares in 2 ways, for example, as 28718881 + 85849 = 5359^2 + 293^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (28804739) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1440227 + ... + 1440246.

Almost surely, 2^28804730 is an apocalyptic number.

28804730 is a deficient number, since it is larger than the sum of its proper divisors (23043802).

28804730 is a wasteful number, since it uses less digits than its factorization.

28804730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2880480.

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 28804730 is about 5367.0038196372. The cubic root of 28804730 is about 306.5405527963.

The spelling of 28804730 in words is "twenty-eight million, eight hundred four thousand, seven hundred thirty".