28959144 has 32 divisors (see below), whose sum is σ = 73941120. Its totient is φ = 9447296.

The previous prime is 28959131. The next prime is 28959149. The reversal of 28959144 is 44195982.

It is a junction number, because it is equal to n+sod(n) for n = 28959096 and 28959105.

It is not an unprimeable number, because it can be changed into a prime (28959149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11709 + ... + 13964.

It is an arithmetic number, because the mean of its divisors is an integer number (2310660).

Almost surely, 2^28959144 is an apocalyptic number.

28959144 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

28959144 is an abundant number, since it is smaller than the sum of its proper divisors (44981976).

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

28959144 is a wasteful number, since it uses less digits than its factorization.

28959144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25729 (or 25725 counting only the distinct ones).

The product of its digits is 103680, while the sum is 42.

The square root of 28959144 is about 5381.3700857681. The cubic root of 28959144 is about 307.0873359376.

The spelling of 28959144 in words is "twenty-eight million, nine hundred fifty-nine thousand, one hundred forty-four".