133706840 has 16 divisors (see below), whose sum is σ = 300840480. Its totient is φ = 53482720.

The previous prime is 133706809. The next prime is 133706861. The reversal of 133706840 is 48607331.

It is a junction number, because it is equal to n+sod(n) for n = 133706797 and 133706806.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1671296 + ... + 1671375.

It is an arithmetic number, because the mean of its divisors is an integer number (18802530).

Almost surely, 2^133706840 is an apocalyptic number.

133706840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133706840 is an abundant number, since it is smaller than the sum of its proper divisors (167133640).

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

133706840 is a wasteful number, since it uses less digits than its factorization.

133706840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3342682 (or 3342678 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 133706840 is about 11563.1673861447. The cubic root of 133706840 is about 511.3495463167.

The spelling of 133706840 in words is "one hundred thirty-three million, seven hundred six thousand, eight hundred forty".