28499995 has 8 divisors (see below), whose sum is σ = 34331616. Its totient is φ = 22712256.

The previous prime is 28499971. The next prime is 28500023. The reversal of 28499995 is 59999482.

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 28499995 - 2⁵ = 28499963 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9522 + ... + 12151.

It is an arithmetic number, because the mean of its divisors is an integer number (4291452).

Almost surely, 2^28499995 is an apocalyptic number.

28499995 is a deficient number, since it is larger than the sum of its proper divisors (5831621).

28499995 is a wasteful number, since it uses less digits than its factorization.

28499995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21941.

The product of its digits is 2099520, while the sum is 55.

The square root of 28499995 is about 5338.5386577227. The cubic root of 28499995 is about 305.4557193516.

The spelling of 28499995 in words is "twenty-eight million, four hundred ninety-nine thousand, nine hundred ninety-five".