133345650 has 48 divisors (see below), whose sum is σ = 333666144. Its totient is φ = 35239680.

The previous prime is 133345631. The next prime is 133345661. The reversal of 133345650 is 56543331.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13017 + ... + 20883.

It is an arithmetic number, because the mean of its divisors is an integer number (6951378).

Almost surely, 2^133345650 is an apocalyptic number.

133345650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 133345650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (166833072).

133345650 is an abundant number, since it is smaller than the sum of its proper divisors (200320494).

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

133345650 is a wasteful number, since it uses less digits than its factorization.

133345650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7995 (or 7990 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 30.

The square root of 133345650 is about 11547.5386987877. The cubic root of 133345650 is about 510.8886850744. Note that the first 3 decimals are identical.

Adding to 133345650 its reverse (56543331), we get a palindrome (189888981).

The spelling of 133345650 in words is "one hundred thirty-three million, three hundred forty-five thousand, six hundred fifty".