133350240 has 48 divisors (see below), whose sum is σ = 420054768. Its totient is φ = 35559936.

The previous prime is 133350221. The next prime is 133350241. The reversal of 133350240 is 42053331.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133350241) 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, 138427 + ... + 139386.

It is an arithmetic number, because the mean of its divisors is an integer number (8751141).

Almost surely, 2^133350240 is an apocalyptic number.

133350240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133350240 is an abundant number, since it is smaller than the sum of its proper divisors (286704528).

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

133350240 is a wasteful number, since it uses less digits than its factorization.

133350240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277831 (or 277823 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 21.

The square root of 133350240 is about 11547.7374407284. The cubic root of 133350240 is about 510.8945469133.

It can be divided in two parts, 133350 and 240, that multiplied together give a triangular number (32004000 = T₈₀₀₀).

The spelling of 133350240 in words is "one hundred thirty-three million, three hundred fifty thousand, two hundred forty".