28968624 has 40 divisors (see below), whose sum is σ = 83151920. Its totient is φ = 9656064.

The previous prime is 28968623. The next prime is 28968631. The reversal of 28968624 is 42686982.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 28968624.

It is not an unprimeable number, because it can be changed into a prime (28968623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33097 + ... + 33960.

It is an arithmetic number, because the mean of its divisors is an integer number (2078798).

Almost surely, 2^28968624 is an apocalyptic number.

28968624 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

28968624 is an abundant number, since it is smaller than the sum of its proper divisors (54183296).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28968624 is a wasteful number, since it uses less digits than its factorization.

28968624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67074 (or 67062 counting only the distinct ones).

The product of its digits is 331776, while the sum is 45.

The square root of 28968624 is about 5382.2508302754. The cubic root of 28968624 is about 307.1208414208.

It can be divided in two parts, 28968 and 624, that added together give a palindrome (29592).

The spelling of 28968624 in words is "twenty-eight million, nine hundred sixty-eight thousand, six hundred twenty-four".