28795591 has 8 divisors (see below), whose sum is σ = 31626000. Its totient is φ = 26000640.

The previous prime is 28795577. The next prime is 28795597. The reversal of 28795591 is 19559782.

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-28795591 is a prime.

It is a super-2 number, since 2×28795591² = 1658372122078562, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28795597) 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, 7146 + ... + 10423.

It is an arithmetic number, because the mean of its divisors is an integer number (3953250).

Almost surely, 2^28795591 is an apocalyptic number.

28795591 is a deficient number, since it is larger than the sum of its proper divisors (2830409).

28795591 is a wasteful number, since it uses less digits than its factorization.

28795591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17729.

The product of its digits is 226800, while the sum is 46.

The square root of 28795591 is about 5366.1523459552. The cubic root of 28795591 is about 306.5081302226.

The spelling of 28795591 in words is "twenty-eight million, seven hundred ninety-five thousand, five hundred ninety-one".