28617244 has 24 divisors (see below), whose sum is σ = 53252640. Its totient is φ = 13425984.

The previous prime is 28617227. The next prime is 28617269. The reversal of 28617244 is 44271682.

It is a happy number.

It is a congruent number.

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, 1942 + ... + 7810.

It is an arithmetic number, because the mean of its divisors is an integer number (2218860).

Almost surely, 2^28617244 is an apocalyptic number.

It is an amenable number.

28617244 is a deficient number, since it is larger than the sum of its proper divisors (24635396).

28617244 is a wasteful number, since it uses less digits than its factorization.

28617244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5949 (or 5947 counting only the distinct ones).

The product of its digits is 21504, while the sum is 34.

The square root of 28617244 is about 5349.5087624940. The cubic root of 28617244 is about 305.8740279176.

The spelling of 28617244 in words is "twenty-eight million, six hundred seventeen thousand, two hundred forty-four".