28556733 has 8 divisors (see below), whose sum is σ = 38118528. Its totient is φ = 19016384.

The previous prime is 28556729. The next prime is 28556741. The reversal of 28556733 is 33765582.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28556733 - 2² = 28556729 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 28556691 and 28556700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28556743) 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, 1941 + ... + 7802.

It is an arithmetic number, because the mean of its divisors is an integer number (4764816).

Almost surely, 2^28556733 is an apocalyptic number.

It is an amenable number.

28556733 is a deficient number, since it is larger than the sum of its proper divisors (9561795).

28556733 is an equidigital number, since it uses as much as digits as its factorization.

28556733 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10723.

The product of its digits is 151200, while the sum is 39.

The square root of 28556733 is about 5343.8500166079. The cubic root of 28556733 is about 305.6582861526.

The spelling of 28556733 in words is "twenty-eight million, five hundred fifty-six thousand, seven hundred thirty-three".