28088733 has 8 divisors (see below), whose sum is σ = 38743200. Its totient is φ = 18080048.

The previous prime is 28088729. The next prime is 28088741. The reversal of 28088733 is 33788082.

It is a happy number.

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 28088733 - 2² = 28088729 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28088691 and 28088700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28088833) 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, 161343 + ... + 161516.

It is an arithmetic number, because the mean of its divisors is an integer number (4842900).

Almost surely, 2^28088733 is an apocalyptic number.

It is an amenable number.

28088733 is a deficient number, since it is larger than the sum of its proper divisors (10654467).

28088733 is a wasteful number, since it uses less digits than its factorization.

28088733 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322891.

The product of its (nonzero) digits is 64512, while the sum is 39.

The square root of 28088733 is about 5299.8804703503. The cubic root of 28088733 is about 303.9793275705.

The spelling of 28088733 in words is "twenty-eight million, eighty-eight thousand, seven hundred thirty-three".