28296644 has 12 divisors (see below), whose sum is σ = 49728000. Its totient is φ = 14088648.

The previous prime is 28296629. The next prime is 28296659. The reversal of 28296644 is 44669282.

It is an interprime number because it is at equal distance from previous prime (28296629) and next prime (28296659).

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, 13844 + ... + 15755.

It is an arithmetic number, because the mean of its divisors is an integer number (4144000).

Almost surely, 2^28296644 is an apocalyptic number.

It is an amenable number.

28296644 is a deficient number, since it is larger than the sum of its proper divisors (21431356).

28296644 is a wasteful number, since it uses less digits than its factorization.

28296644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29842 (or 29840 counting only the distinct ones).

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

The square root of 28296644 is about 5319.4589950483. The cubic root of 28296644 is about 304.7274964579.

The spelling of 28296644 in words is "twenty-eight million, two hundred ninety-six thousand, six hundred forty-four".