28315194 has 16 divisors (see below), whose sum is σ = 58583520. Its totient is φ = 9112880.

The previous prime is 28315193. The next prime is 28315207. The reversal of 28315194 is 49151382.

It is a super-2 number, since 2×28315194² = 1603500422515272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28315193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81192 + ... + 81539.

It is an arithmetic number, because the mean of its divisors is an integer number (3661470).

Almost surely, 2^28315194 is an apocalyptic number.

28315194 is an abundant number, since it is smaller than the sum of its proper divisors (30268326).

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

28315194 is a wasteful number, since it uses less digits than its factorization.

28315194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162765.

The product of its digits is 8640, while the sum is 33.

The square root of 28315194 is about 5321.2023077496. The cubic root of 28315194 is about 304.7940704339.

The spelling of 28315194 in words is "twenty-eight million, three hundred fifteen thousand, one hundred ninety-four".