28813192 has 16 divisors (see below), whose sum is σ = 54504540. Its totient is φ = 14278656.

The previous prime is 28813189. The next prime is 28813199. The reversal of 28813192 is 29131882.

It can be written as a sum of positive squares in 2 ways, for example, as 22791076 + 6022116 = 4774^2 + 2454^2 .

It is not an unprimeable number, because it can be changed into a prime (28813199) 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, 15033 + ... + 16840.

Almost surely, 2^28813192 is an apocalyptic number.

It is an amenable number.

28813192 is a deficient number, since it is larger than the sum of its proper divisors (25691348).

28813192 is a wasteful number, since it uses less digits than its factorization.

28813192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31992 (or 31988 counting only the distinct ones).

The product of its digits is 6912, while the sum is 34.

The square root of 28813192 is about 5367.7920973152. The cubic root of 28813192 is about 306.5705674524.

The spelling of 28813192 in words is "twenty-eight million, eight hundred thirteen thousand, one hundred ninety-two".