133451850 has 96 divisors (see below), whose sum is σ = 381225600. Its totient is φ = 30263040.

The previous prime is 133451821. The next prime is 133451867. The reversal of 133451850 is 58154331.

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

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 156024 + ... + 156876.

It is an arithmetic number, because the mean of its divisors is an integer number (3971100).

Almost surely, 2^133451850 is an apocalyptic number.

133451850 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 133451850, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (190612800).

133451850 is an abundant number, since it is smaller than the sum of its proper divisors (247773750).

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

133451850 is a wasteful number, since it uses less digits than its factorization.

133451850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1024 (or 1019 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 133451850 is about 11552.1361660950. The cubic root of 133451850 is about 511.0242775015.

The spelling of 133451850 in words is "one hundred thirty-three million, four hundred fifty-one thousand, eight hundred fifty".