28880491 has 8 divisors (see below), whose sum is σ = 29937600. Its totient is φ = 27827520.

The previous prime is 28880483. The next prime is 28880497. The reversal of 28880491 is 19408882.

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 28880491 - 2³ = 28880483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28880497) 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, 22846 + ... + 24076.

It is an arithmetic number, because the mean of its divisors is an integer number (3742200).

Almost surely, 2^28880491 is an apocalyptic number.

28880491 is a deficient number, since it is larger than the sum of its proper divisors (1057109).

28880491 is a wasteful number, since it uses less digits than its factorization.

28880491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2069.

The product of its (nonzero) digits is 36864, while the sum is 40.

The square root of 28880491 is about 5374.0572196433. The cubic root of 28880491 is about 306.8090675824.

The spelling of 28880491 in words is "twenty-eight million, eight hundred eighty thousand, four hundred ninety-one".