133884428 has 12 divisors (see below), whose sum is σ = 234963960. Its totient is φ = 66751872.

The previous prime is 133884379. The next prime is 133884467. The reversal of 133884428 is 824488331.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45998 + ... + 48821.

It is an arithmetic number, because the mean of its divisors is an integer number (19580330).

Almost surely, 2^133884428 is an apocalyptic number.

It is an amenable number.

133884428 is a deficient number, since it is larger than the sum of its proper divisors (101079532).

133884428 is a wasteful number, since it uses less digits than its factorization.

133884428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95176 (or 95174 counting only the distinct ones).

The product of its digits is 147456, while the sum is 41.

The square root of 133884428 is about 11570.8438758804. The cubic root of 133884428 is about 511.5758358339.

The spelling of 133884428 in words is "one hundred thirty-three million, eight hundred eighty-four thousand, four hundred twenty-eight".