28804057 has 8 divisors (see below), whose sum is σ = 30369600. Its totient is φ = 27243504.

The previous prime is 28804051. The next prime is 28804067. The reversal of 28804057 is 75040882.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28804057 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28804051) 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, 20388 + ... + 21754.

It is an arithmetic number, because the mean of its divisors is an integer number (3796200).

Almost surely, 2^28804057 is an apocalyptic number.

It is an amenable number.

28804057 is a deficient number, since it is larger than the sum of its proper divisors (1565543).

28804057 is a wasteful number, since it uses less digits than its factorization.

28804057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2495.

The product of its (nonzero) digits is 17920, while the sum is 34.

The square root of 28804057 is about 5366.9411213465. The cubic root of 28804057 is about 306.5381654176.

The spelling of 28804057 in words is "twenty-eight million, eight hundred four thousand, fifty-seven".