28956369 has 16 divisors (see below), whose sum is σ = 41804672. Its totient is φ = 17722368.

The previous prime is 28956349. The next prime is 28956377. The reversal of 28956369 is 96365982.

It is not a de Polignac number, because 28956369 - 2⁵ = 28956337 is a prime.

It is a super-2 number, since 2×28956369² = 1676942611328322, which contains 22 as substring.

28956369 is a modest number, since divided by 6369 gives 2895 as remainder.

It is not an unprimeable number, because it can be changed into a prime (28956349) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5604 + ... + 9450.

It is an arithmetic number, because the mean of its divisors is an integer number (2612792).

Almost surely, 2^28956369 is an apocalyptic number.

It is an amenable number.

28956369 is a deficient number, since it is larger than the sum of its proper divisors (12848303).

28956369 is a wasteful number, since it uses less digits than its factorization.

28956369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4056.

The product of its digits is 699840, while the sum is 48.

The square root of 28956369 is about 5381.1122456236. The cubic root of 28956369 is about 307.0775267782.

The spelling of 28956369 in words is "twenty-eight million, nine hundred fifty-six thousand, three hundred sixty-nine".