28336197 has 4 divisors (see below), whose sum is σ = 37781600. Its totient is φ = 18890796.

The previous prime is 28336193. The next prime is 28336211. The reversal of 28336197 is 79163382.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 28336197 - 2² = 28336193 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28336193) 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, 4722697 + ... + 4722702.

It is an arithmetic number, because the mean of its divisors is an integer number (9445400).

Almost surely, 2^28336197 is an apocalyptic number.

It is an amenable number.

28336197 is a deficient number, since it is larger than the sum of its proper divisors (9445403).

28336197 is an equidigital number, since it uses as much as digits as its factorization.

28336197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9445402.

The product of its digits is 54432, while the sum is 39.

The square root of 28336197 is about 5323.1754620715. The cubic root of 28336197 is about 304.8694128773.

The spelling of 28336197 in words is "twenty-eight million, three hundred thirty-six thousand, one hundred ninety-seven".