133687740 has 48 divisors (see below), whose sum is σ = 382298112. Its totient is φ = 34890816.

The previous prime is 133687739. The next prime is 133687777. The reversal of 133687740 is 47786331.

It is a congruent number.

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, 20884 + ... + 26523.

It is an arithmetic number, because the mean of its divisors is an integer number (7964544).

Almost surely, 2^133687740 is an apocalyptic number.

133687740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133687740 is an abundant number, since it is smaller than the sum of its proper divisors (248610372).

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

133687740 is a wasteful number, since it uses less digits than its factorization.

133687740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47466 (or 47464 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 39.

The square root of 133687740 is about 11562.3414583725. The cubic root of 133687740 is about 511.3251964245.

The spelling of 133687740 in words is "one hundred thirty-three million, six hundred eighty-seven thousand, seven hundred forty".