28775196 has 96 divisors (see below), whose sum is σ = 80864000. Its totient is φ = 8817984.

The previous prime is 28775179. The next prime is 28775207. The reversal of 28775196 is 69157782.

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 31 ways as a sum of consecutive naturals, for example, 75735 + ... + 76113.

Almost surely, 2^28775196 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28775196, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40432000).

28775196 is an abundant number, since it is smaller than the sum of its proper divisors (52088804).

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

28775196 is a wasteful number, since it uses less digits than its factorization.

28775196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448 (or 440 counting only the distinct ones).

The product of its digits is 211680, while the sum is 45.

The square root of 28775196 is about 5364.2516719483. The cubic root of 28775196 is about 306.4357498161.

The spelling of 28775196 in words is "twenty-eight million, seven hundred seventy-five thousand, one hundred ninety-six".