28984699 has 4 divisors (see below), whose sum is σ = 29459920. Its totient is φ = 28509480.

The previous prime is 28984691. The next prime is 28984733. The reversal of 28984699 is 99648982.

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 28984699 - 2³ = 28984691 is a prime.

It is a super-2 number, since 2×28984699² = 1680225552241202, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28984691) 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, 237519 + ... + 237640.

It is an arithmetic number, because the mean of its divisors is an integer number (7364980).

Almost surely, 2^28984699 is an apocalyptic number.

28984699 is a deficient number, since it is larger than the sum of its proper divisors (475221).

28984699 is an equidigital number, since it uses as much as digits as its factorization.

28984699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 475220.

The product of its digits is 2239488, while the sum is 55.

The square root of 28984699 is about 5383.7439575076. The cubic root of 28984699 is about 307.1776391319.

The spelling of 28984699 in words is "twenty-eight million, nine hundred eighty-four thousand, six hundred ninety-nine".