28910059 has 4 divisors (see below), whose sum is σ = 29400120. Its totient is φ = 28420000.

The previous prime is 28910053. The next prime is 28910087. The reversal of 28910059 is 95001982.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28910059 - 2³ = 28910051 is a prime.

It is a super-2 number, since 2×28910059² = 1671583022766962, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28910051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 244942 + ... + 245059.

It is an arithmetic number, because the mean of its divisors is an integer number (7350030).

Almost surely, 2^28910059 is an apocalyptic number.

28910059 is a deficient number, since it is larger than the sum of its proper divisors (490061).

28910059 is an equidigital number, since it uses as much as digits as its factorization.

28910059 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490060.

The product of its (nonzero) digits is 6480, while the sum is 34.

The square root of 28910059 is about 5376.8075100379. The cubic root of 28910059 is about 306.9137361212.

It can be divided in two parts, 289100 and 59, that multiplied together give a square (17056900 = 4130²).

The spelling of 28910059 in words is "twenty-eight million, nine hundred ten thousand, fifty-nine".