133228712 has 32 divisors (see below), whose sum is σ = 257320800. Its totient is φ = 64620864.

The previous prime is 133228661. The next prime is 133228727. The reversal of 133228712 is 217822331.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 194723 + ... + 195405.

It is an arithmetic number, because the mean of its divisors is an integer number (8041275).

Almost surely, 2^133228712 is an apocalyptic number.

It is an amenable number.

133228712 is a deficient number, since it is larger than the sum of its proper divisors (124092088).

133228712 is a wasteful number, since it uses less digits than its factorization.

133228712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1385 (or 1381 counting only the distinct ones).

The product of its digits is 4032, while the sum is 29.

The square root of 133228712 is about 11542.4742581476. The cubic root of 133228712 is about 510.7392994406.

The spelling of 133228712 in words is "one hundred thirty-three million, two hundred twenty-eight thousand, seven hundred twelve".