28164337 has 4 divisors (see below), whose sum is σ = 29072896. Its totient is φ = 27255780.

The previous prime is 28164329. The next prime is 28164343. The reversal of 28164337 is 73346182.

It is a happy number.

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 a cyclic number.

It is not a de Polignac number, because 28164337 - 2³ = 28164329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28164347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 454233 + ... + 454294.

It is an arithmetic number, because the mean of its divisors is an integer number (7268224).

Almost surely, 2^28164337 is an apocalyptic number.

It is an amenable number.

28164337 is a deficient number, since it is larger than the sum of its proper divisors (908559).

28164337 is an equidigital number, since it uses as much as digits as its factorization.

28164337 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 908558.

The product of its digits is 24192, while the sum is 34.

The square root of 28164337 is about 5307.0082909300. The cubic root of 28164337 is about 304.2518148137.

The spelling of 28164337 in words is "twenty-eight million, one hundred sixty-four thousand, three hundred thirty-seven".