28998297 has 16 divisors (see below), whose sum is σ = 43961280. Its totient is φ = 18881856.

The previous prime is 28998271. The next prime is 28998329. The reversal of 28998297 is 79289982.

It is not a de Polignac number, because 28998297 - 2⁷ = 28998169 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28998217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11328 + ... + 13649.

It is an arithmetic number, because the mean of its divisors is an integer number (2747580).

Almost surely, 2^28998297 is an apocalyptic number.

28998297 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

28998297 is a deficient number, since it is larger than the sum of its proper divisors (14962983).

28998297 is a wasteful number, since it uses less digits than its factorization.

28998297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25029 (or 25023 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 54.

The square root of 28998297 is about 5385.0066852326. The cubic root of 28998297 is about 307.2256684790.

The spelling of 28998297 in words is "twenty-eight million, nine hundred ninety-eight thousand, two hundred ninety-seven".