28738744 has 16 divisors (see below), whose sum is σ = 54052920. Its totient is φ = 14324640.

The previous prime is 28738711. The next prime is 28738769. The reversal of 28738744 is 44783782.

It is a self number, because there is not a number n which added to its sum of digits gives 28738744.

It is a congruent number.

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, 2779 + ... + 8074.

Almost surely, 2^28738744 is an apocalyptic number.

It is an amenable number.

28738744 is a deficient number, since it is larger than the sum of its proper divisors (25314176).

28738744 is a wasteful number, since it uses less digits than its factorization.

28738744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11190 (or 11186 counting only the distinct ones).

The product of its digits is 301056, while the sum is 43.

The square root of 28738744 is about 5360.8529172138. The cubic root of 28738744 is about 306.3062990208.

The spelling of 28738744 in words is "twenty-eight million, seven hundred thirty-eight thousand, seven hundred forty-four".