28969056 has 48 divisors (see below), whose sum is σ = 84495600. Its totient is φ = 9656064.

The previous prime is 28969051. The next prime is 28969067. The reversal of 28969056 is 65096982.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×28969056² = 1678412411062272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28969051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15901 + ... + 17628.

It is an arithmetic number, because the mean of its divisors is an integer number (1760325).

Almost surely, 2^28969056 is an apocalyptic number.

It is an amenable number.

28969056 is an abundant number, since it is smaller than the sum of its proper divisors (55526544).

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

28969056 is a wasteful number, since it uses less digits than its factorization.

28969056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33548 (or 33534 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The square root of 28969056 is about 5382.2909620347. The cubic root of 28969056 is about 307.1223680788.

The spelling of 28969056 in words is "twenty-eight million, nine hundred sixty-nine thousand, fifty-six".