28946133 has 16 divisors (see below), whose sum is σ = 42975360. Its totient is φ = 19255968.

The previous prime is 28946131. The next prime is 28946143. The reversal of 28946133 is 33164982.

It is not a de Polignac number, because 28946133 - 2¹ = 28946131 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28946131) 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, 16641 + ... + 18297.

It is an arithmetic number, because the mean of its divisors is an integer number (2685960).

Almost surely, 2^28946133 is an apocalyptic number.

It is an amenable number.

28946133 is a deficient number, since it is larger than the sum of its proper divisors (14029227).

28946133 is a wasteful number, since it uses less digits than its factorization.

28946133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2313 (or 2307 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 28946133 is about 5380.1610570688. The cubic root of 28946133 is about 307.0413388154.

The spelling of 28946133 in words is "twenty-eight million, nine hundred forty-six thousand, one hundred thirty-three".