133340868 has 36 divisors (see below), whose sum is σ = 340851420. Its totient is φ = 43946496.

The previous prime is 133340863. The next prime is 133340881. The reversal of 133340868 is 868043331.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 95296644 + 38044224 = 9762^2 + 6168^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133340863) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17605 + ... + 24012.

It is an arithmetic number, because the mean of its divisors is an integer number (9468095).

Almost surely, 2^133340868 is an apocalyptic number.

133340868 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

133340868 is an abundant number, since it is smaller than the sum of its proper divisors (207510552).

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

133340868 is a wasteful number, since it uses less digits than its factorization.

133340868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41716 (or 41711 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 133340868 is about 11547.3316398205. The cubic root of 133340868 is about 510.8825778913.

The spelling of 133340868 in words is "one hundred thirty-three million, three hundred forty thousand, eight hundred sixty-eight".