133406250 has 56 divisors (see below), whose sum is σ = 333745728. Its totient is φ = 35550000.

The previous prime is 133406219. The next prime is 133406263. The reversal of 133406250 is 52604331.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 133406250.

It is an unprimeable number.

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 27 ways as a sum of consecutive naturals, for example, 93039 + ... + 94461.

Almost surely, 2^133406250 is an apocalyptic number.

133406250 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 133406250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (166872864).

133406250 is an abundant number, since it is smaller than the sum of its proper divisors (200339478).

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

133406250 is an frugal number, since it uses more digits than its factorization.

133406250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1458 (or 1433 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 133406250 is about 11550.1623365215. The cubic root of 133406250 is about 510.9660658402.

The spelling of 133406250 in words is "one hundred thirty-three million, four hundred six thousand, two hundred fifty".