133406828 has 18 divisors (see below), whose sum is σ = 246398796. Its totient is φ = 63192024.

The previous prime is 133406827. The next prime is 133406869. The reversal of 133406828 is 828604331.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (133406827) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 44750 + ... + 47637.

It is an arithmetic number, because the mean of its divisors is an integer number (13688822).

Almost surely, 2^133406828 is an apocalyptic number.

It is an amenable number.

133406828 is a deficient number, since it is larger than the sum of its proper divisors (112991968).

133406828 is a wasteful number, since it uses less digits than its factorization.

133406828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92429 (or 92408 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 35.

The square root of 133406828 is about 11550.1873577878. The cubic root of 133406828 is about 510.9668037815.

The spelling of 133406828 in words is "one hundred thirty-three million, four hundred six thousand, eight hundred twenty-eight".