28644296 has 32 divisors (see below), whose sum is σ = 54885600. Its totient is φ = 14012160.

The previous prime is 28644289. The next prime is 28644313. The reversal of 28644296 is 69244682.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

28644296 is a modest number, since divided by 4296 gives 2864 as remainder.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118736 + ... + 118976.

It is an arithmetic number, because the mean of its divisors is an integer number (1715175).

Almost surely, 2^28644296 is an apocalyptic number.

It is an amenable number.

28644296 is a deficient number, since it is larger than the sum of its proper divisors (26241304).

28644296 is a wasteful number, since it uses less digits than its factorization.

28644296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509 (or 505 counting only the distinct ones).

The product of its digits is 165888, while the sum is 41.

The square root of 28644296 is about 5352.0366216983. The cubic root of 28644296 is about 305.9703788947.

The spelling of 28644296 in words is "twenty-eight million, six hundred forty-four thousand, two hundred ninety-six".