133620920 has 64 divisors (see below), whose sum is σ = 319572000. Its totient is φ = 50139648.

The previous prime is 133620919. The next prime is 133620923. The reversal of 133620920 is 29026331.

It is a self number, because there is not a number n which added to its sum of digits gives 133620920.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133620923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82034 + ... + 83646.

Almost surely, 2^133620920 is an apocalyptic number.

133620920 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 133620920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (159786000).

133620920 is an abundant number, since it is smaller than the sum of its proper divisors (185951080).

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

133620920 is a wasteful number, since it uses less digits than its factorization.

133620920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1752 (or 1748 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 26.

The square root of 133620920 is about 11559.4515440829. The cubic root of 133620920 is about 511.2399917936.

The spelling of 133620920 in words is "one hundred thirty-three million, six hundred twenty thousand, nine hundred twenty".