28520196 has 12 divisors (see below), whose sum is σ = 66547152. Its totient is φ = 9506728.

The previous prime is 28520179. The next prime is 28520209. The reversal of 28520196 is 69102582.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1188330 + ... + 1188353.

It is an arithmetic number, because the mean of its divisors is an integer number (5545596).

Almost surely, 2^28520196 is an apocalyptic number.

It is an amenable number.

28520196 is an abundant number, since it is smaller than the sum of its proper divisors (38026956).

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

28520196 is a wasteful number, since it uses less digits than its factorization.

28520196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2376690 (or 2376688 counting only the distinct ones).

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

The square root of 28520196 is about 5340.4303197402. The cubic root of 28520196 is about 305.5278720386.

The spelling of 28520196 in words is "twenty-eight million, five hundred twenty thousand, one hundred ninety-six".