133440740 has 48 divisors (see below), whose sum is σ = 291561984. Its totient is φ = 51244800.

The previous prime is 133440719. The next prime is 133440763. The reversal of 133440740 is 47044331.

133440740 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84155 + ... + 85725.

It is an arithmetic number, because the mean of its divisors is an integer number (6074208).

Almost surely, 2^133440740 is an apocalyptic number.

133440740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 133440740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (145780992).

133440740 is an abundant number, since it is smaller than the sum of its proper divisors (158121244).

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

133440740 is a wasteful number, since it uses less digits than its factorization.

133440740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1748 (or 1746 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 26.

The square root of 133440740 is about 11551.6552926410. The cubic root of 133440740 is about 511.0100960139.

The spelling of 133440740 in words is "one hundred thirty-three million, four hundred forty thousand, seven hundred forty".