133683620 has 96 divisors (see below), whose sum is σ = 349574400. Its totient is φ = 41900544.

The previous prime is 133683619. The next prime is 133683643. The reversal of 133683620 is 26386331.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 76274 + ... + 78006.

It is an arithmetic number, because the mean of its divisors is an integer number (3641400).

Almost surely, 2^133683620 is an apocalyptic number.

133683620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 133683620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (174787200).

133683620 is an abundant number, since it is smaller than the sum of its proper divisors (215890780).

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

133683620 is a wasteful number, since it uses less digits than its factorization.

133683620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1797 (or 1795 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 133683620 is about 11562.1632923947. The cubic root of 133683620 is about 511.3199436829.

The spelling of 133683620 in words is "one hundred thirty-three million, six hundred eighty-three thousand, six hundred twenty".