133906940 has 24 divisors (see below), whose sum is σ = 281422512. Its totient is φ = 53521280.

The previous prime is 133906907. The next prime is 133906957. The reversal of 133906940 is 49609331.

It is a self number, because there is not a number n which added to its sum of digits gives 133906940.

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, 46832 + ... + 49608.

It is an arithmetic number, because the mean of its divisors is an integer number (11725938).

Almost surely, 2^133906940 is an apocalyptic number.

133906940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133906940 is an abundant number, since it is smaller than the sum of its proper divisors (147515572).

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

133906940 is a wasteful number, since it uses less digits than its factorization.

133906940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5197 (or 5195 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 35.

The square root of 133906940 is about 11571.8166248865. The cubic root of 133906940 is about 511.6045072036.

The spelling of 133906940 in words is "one hundred thirty-three million, nine hundred six thousand, nine hundred forty".