133218040 has 32 divisors (see below), whose sum is σ = 300231360. Its totient is φ = 53200000.

The previous prime is 133218031. The next prime is 133218049. The reversal of 133218040 is 40812331.

It is an interprime number because it is at equal distance from previous prime (133218031) and next prime (133218049).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133218049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25665 + ... + 30415.

It is an arithmetic number, because the mean of its divisors is an integer number (9382230).

Almost surely, 2^133218040 is an apocalyptic number.

133218040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133218040 is an abundant number, since it is smaller than the sum of its proper divisors (167013320).

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

133218040 is a wasteful number, since it uses less digits than its factorization.

133218040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5463 (or 5459 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 133218040 is about 11542.0119563272. The cubic root of 133218040 is about 510.7256618514.

The spelling of 133218040 in words is "one hundred thirty-three million, two hundred eighteen thousand, forty".