28115192 has 16 divisors (see below), whose sum is σ = 60246960. Its totient is φ = 12049344.

The previous prime is 28115183. The next prime is 28115203. The reversal of 28115192 is 29151182.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 250973 + ... + 251084.

It is an arithmetic number, because the mean of its divisors is an integer number (3765435).

Almost surely, 2^28115192 is an apocalyptic number.

It is an amenable number.

28115192 is an abundant number, since it is smaller than the sum of its proper divisors (32131768).

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

28115192 is a wasteful number, since it uses less digits than its factorization.

28115192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502070 (or 502066 counting only the distinct ones).

The product of its digits is 1440, while the sum is 29.

The square root of 28115192 is about 5302.3760711590. The cubic root of 28115192 is about 304.0747450095.

The spelling of 28115192 in words is "twenty-eight million, one hundred fifteen thousand, one hundred ninety-two".