133752220 has 48 divisors (see below), whose sum is σ = 322257600. Its totient is φ = 45679104.

The previous prime is 133752193. The next prime is 133752221. The reversal of 133752220 is 22257331.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133752221) 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, 37056 + ... + 40504.

It is an arithmetic number, because the mean of its divisors is an integer number (6713700).

Almost surely, 2^133752220 is an apocalyptic number.

133752220 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 133752220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (161128800).

133752220 is an abundant number, since it is smaller than the sum of its proper divisors (188505380).

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

133752220 is a wasteful number, since it uses less digits than its factorization.

133752220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3742 (or 3740 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 133752220 is about 11565.1294847918. The cubic root of 133752220 is about 511.4073903225.

The spelling of 133752220 in words is "one hundred thirty-three million, seven hundred fifty-two thousand, two hundred twenty".