133217372 has 12 divisors (see below), whose sum is σ = 246844080. Its totient is φ = 62690496.

The previous prime is 133217369. The next prime is 133217377. The reversal of 133217372 is 273712331.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133217377) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 979472 + ... + 979607.

It is an arithmetic number, because the mean of its divisors is an integer number (20570340).

Almost surely, 2^133217372 is an apocalyptic number.

It is an amenable number.

133217372 is a deficient number, since it is larger than the sum of its proper divisors (113626708).

133217372 is a wasteful number, since it uses less digits than its factorization.

133217372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1959100 (or 1959098 counting only the distinct ones).

The product of its digits is 5292, while the sum is 29.

The square root of 133217372 is about 11541.9830185285. The cubic root of 133217372 is about 510.7248082000.

The spelling of 133217372 in words is "one hundred thirty-three million, two hundred seventeen thousand, three hundred seventy-two".