28988504 has 16 divisors (see below), whose sum is σ = 54501120. Its totient is φ = 14454880.

The previous prime is 28988489. The next prime is 28988507. The reversal of 28988504 is 40588982.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28988507) 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, 1667 + ... + 7794.

It is an arithmetic number, because the mean of its divisors is an integer number (3406320).

Almost surely, 2^28988504 is an apocalyptic number.

It is an amenable number.

28988504 is a deficient number, since it is larger than the sum of its proper divisors (25512616).

28988504 is a wasteful number, since it uses less digits than its factorization.

28988504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9850 (or 9846 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 44.

The square root of 28988504 is about 5384.0973245290. The cubic root of 28988504 is about 307.1910802441.

It can be divided in two parts, 28988 and 504, that added together give a palindrome (29492).

The spelling of 28988504 in words is "twenty-eight million, nine hundred eighty-eight thousand, five hundred four".