133040440 has 32 divisors (see below), whose sum is σ = 322368480. Its totient is φ = 49122432.

The previous prime is 133040423. The next prime is 133040471. The reversal of 133040440 is 44040331.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 127404 + ... + 128443.

It is an arithmetic number, because the mean of its divisors is an integer number (10074015).

Almost surely, 2^133040440 is an apocalyptic number.

133040440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133040440 is an abundant number, since it is smaller than the sum of its proper divisors (189328040).

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

133040440 is a wasteful number, since it uses less digits than its factorization.

133040440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255871 (or 255867 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 133040440 is about 11534.3157577725. The cubic root of 133040440 is about 510.4986024750.

Adding to 133040440 its reverse (44040331), we get a palindrome (177080771).

The spelling of 133040440 in words is "one hundred thirty-three million, forty thousand, four hundred forty".