133557340 has 48 divisors (see below), whose sum is σ = 327096000. Its totient is φ = 45788736.

The previous prime is 133557337. The next prime is 133557341. The reversal of 133557340 is 43755331.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133557341) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2875 + ... + 16594.

It is an arithmetic number, because the mean of its divisors is an integer number (6814500).

Almost surely, 2^133557340 is an apocalyptic number.

133557340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133557340 is an abundant number, since it is smaller than the sum of its proper divisors (193538660).

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

133557340 is a wasteful number, since it uses less digits than its factorization.

133557340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19499 (or 19483 counting only the distinct ones).

The product of its (nonzero) digits is 18900, while the sum is 31.

The square root of 133557340 is about 11556.7010863827. The cubic root of 133557340 is about 511.1588922284.

The spelling of 133557340 in words is "one hundred thirty-three million, five hundred fifty-seven thousand, three hundred forty".