133976220 has 192 divisors, whose sum is σ = 458465280. Its totient is φ = 28553472.

The previous prime is 133976177. The next prime is 133976291. The reversal of 133976220 is 22679331.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 821859 + ... + 822021.

It is an arithmetic number, because the mean of its divisors is an integer number (2387840).

Almost surely, 2^133976220 is an apocalyptic number.

133976220 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 133976220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (229232640).

133976220 is an abundant number, since it is smaller than the sum of its proper divisors (324489060).

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

133976220 is a wasteful number, since it uses less digits than its factorization.

133976220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304 (or 302 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 33.

The square root of 133976220 is about 11574.8097176584. The cubic root of 133976220 is about 511.6927223213.

The spelling of 133976220 in words is "one hundred thirty-three million, nine hundred seventy-six thousand, two hundred twenty".