133388292 has 48 divisors (see below), whose sum is σ = 315795200. Its totient is φ = 43817760.

The previous prime is 133388291. The next prime is 133388309. The reversal of 133388292 is 292883331.

It is a self number, because there is not a number n which added to its sum of digits gives 133388292.

It is not an unprimeable number, because it can be changed into a prime (133388291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 351759 + ... + 352137.

Almost surely, 2^133388292 is an apocalyptic number.

133388292 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

133388292 is an abundant number, since it is smaller than the sum of its proper divisors (182406908).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

133388292 is a wasteful number, since it uses less digits than its factorization.

133388292 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 736 (or 734 counting only the distinct ones).

The product of its digits is 62208, while the sum is 39.

The square root of 133388292 is about 11549.3849186872. The cubic root of 133388292 is about 510.9431375282.

The spelling of 133388292 in words is "one hundred thirty-three million, three hundred eighty-eight thousand, two hundred ninety-two".