28333132 has 24 divisors (see below), whose sum is σ = 52440192. Its totient is φ = 13372800.

The previous prime is 28333121. The next prime is 28333139. The reversal of 28333132 is 23133382.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 28333097 and 28333106.

It is not an unprimeable number, because it can be changed into a prime (28333139) 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, 2298 + ... + 7870.

It is an arithmetic number, because the mean of its divisors is an integer number (2185008).

Almost surely, 2^28333132 is an apocalyptic number.

It is an amenable number.

28333132 is a deficient number, since it is larger than the sum of its proper divisors (24107060).

28333132 is a wasteful number, since it uses less digits than its factorization.

28333132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5649 (or 5647 counting only the distinct ones).

The product of its digits is 2592, while the sum is 25.

The square root of 28333132 is about 5322.8875622166. The cubic root of 28333132 is about 304.8584203596.

The spelling of 28333132 in words is "twenty-eight million, three hundred thirty-three thousand, one hundred thirty-two".