28133355 has 8 divisors (see below), whose sum is σ = 45013392. Its totient is φ = 15004448.

The previous prime is 28133353. The next prime is 28133381. The reversal of 28133355 is 55333182.

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 28133355 - 2¹ = 28133353 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28133353) 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, 937764 + ... + 937793.

It is an arithmetic number, because the mean of its divisors is an integer number (5626674).

Almost surely, 2^28133355 is an apocalyptic number.

28133355 is a deficient number, since it is larger than the sum of its proper divisors (16880037).

28133355 is a wasteful number, since it uses less digits than its factorization.

28133355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1875565.

The product of its digits is 10800, while the sum is 30.

The square root of 28133355 is about 5304.0885173609. The cubic root of 28133355 is about 304.1402104551.

The spelling of 28133355 in words is "twenty-eight million, one hundred thirty-three thousand, three hundred fifty-five".