28999544 has 32 divisors (see below), whose sum is σ = 63592320. Its totient is φ = 12138336.

The previous prime is 28999513. The next prime is 28999549. The reversal of 28999544 is 44599982.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 28999492 and 28999501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28999549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3614 + ... + 8429.

It is an arithmetic number, because the mean of its divisors is an integer number (1987260).

Almost surely, 2^28999544 is an apocalyptic number.

It is an amenable number.

28999544 is an abundant number, since it is smaller than the sum of its proper divisors (34592776).

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

28999544 is a wasteful number, since it uses less digits than its factorization.

28999544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12099 (or 12095 counting only the distinct ones).

The product of its digits is 933120, while the sum is 50.

The square root of 28999544 is about 5385.1224684310. The cubic root of 28999544 is about 307.2300722424.

The spelling of 28999544 in words is "twenty-eight million, nine hundred ninety-nine thousand, five hundred forty-four".