28790445 has 8 divisors (see below), whose sum is σ = 46064736. Its totient is φ = 15354896.

The previous prime is 28790441. The next prime is 28790449. The reversal of 28790445 is 54409782.

It is an interprime number because it is at equal distance from previous prime (28790441) and next prime (28790449).

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 28790445 - 2² = 28790441 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28790441) 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, 959667 + ... + 959696.

It is an arithmetic number, because the mean of its divisors is an integer number (5758092).

Almost surely, 2^28790445 is an apocalyptic number.

It is an amenable number.

28790445 is a deficient number, since it is larger than the sum of its proper divisors (17274291).

28790445 is a wasteful number, since it uses less digits than its factorization.

28790445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1919371.

The product of its (nonzero) digits is 80640, while the sum is 39.

The square root of 28790445 is about 5365.6728375852. The cubic root of 28790445 is about 306.4898706587.

The spelling of 28790445 in words is "twenty-eight million, seven hundred ninety thousand, four hundred forty-five".