28580783 has 8 divisors (see below), whose sum is σ = 35633280. Its totient is φ = 22270680.

The previous prime is 28580771. The next prime is 28580819. The reversal of 28580783 is 38708582.

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

It is a cyclic number.

It is not a de Polignac number, because 28580783 - 2⁶ = 28580719 is a prime.

It is a super-2 number, since 2×28580783² = 1633722313786178, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28580783.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28580753) 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, 185513 + ... + 185666.

It is an arithmetic number, because the mean of its divisors is an integer number (4454160).

Almost surely, 2^28580783 is an apocalyptic number.

28580783 is a deficient number, since it is larger than the sum of its proper divisors (7052497).

28580783 is a wasteful number, since it uses less digits than its factorization.

28580783 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371197.

The product of its (nonzero) digits is 107520, while the sum is 41.

The square root of 28580783 is about 5346.0997933073. The cubic root of 28580783 is about 305.7440688306.

The spelling of 28580783 in words is "twenty-eight million, five hundred eighty thousand, seven hundred eighty-three".