28197294 has 8 divisors (see below), whose sum is σ = 56394600. Its totient is φ = 9399096.

The previous prime is 28197289. The next prime is 28197343. The reversal of 28197294 is 49279182.

It is a sphenic number, since it is the product of 3 distinct primes.

28197294 is an admirable number.

It is a congruent number.

It is an unprimeable number.

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, 2349769 + ... + 2349780.

It is an arithmetic number, because the mean of its divisors is an integer number (7049325).

Almost surely, 2^28197294 is an apocalyptic number.

28197294 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28197294 is a wasteful number, since it uses less digits than its factorization.

28197294 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4699554.

The product of its digits is 72576, while the sum is 42.

The square root of 28197294 is about 5310.1124281883. The cubic root of 28197294 is about 304.3704437785.

The spelling of 28197294 in words is "twenty-eight million, one hundred ninety-seven thousand, two hundred ninety-four".