28692644 has 12 divisors (see below), whose sum is σ = 51063600. Its totient is φ = 14103048.

The previous prime is 28692619. The next prime is 28692647. The reversal of 28692644 is 44629682.

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

It is not an unprimeable number, because it can be changed into a prime (28692647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60554 + ... + 61025.

It is an arithmetic number, because the mean of its divisors is an integer number (4255300).

Almost surely, 2^28692644 is an apocalyptic number.

It is an amenable number.

28692644 is a deficient number, since it is larger than the sum of its proper divisors (22370956).

28692644 is a wasteful number, since it uses less digits than its factorization.

28692644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121642 (or 121640 counting only the distinct ones).

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

The square root of 28692644 is about 5356.5515025994. The cubic root of 28692644 is about 306.1424287475.

The spelling of 28692644 in words is "twenty-eight million, six hundred ninety-two thousand, six hundred forty-four".