133853250 has 64 divisors (see below), whose sum is σ = 335746944. Its totient is φ = 35518400.

The previous prime is 133853231. The next prime is 133853263. The reversal of 133853250 is 52358331.

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

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 237469 + ... + 238031.

It is an arithmetic number, because the mean of its divisors is an integer number (5246046).

Almost surely, 2^133853250 is an apocalyptic number.

133853250 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 133853250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (167873472).

133853250 is an abundant number, since it is smaller than the sum of its proper divisors (201893694).

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

133853250 is a wasteful number, since it uses less digits than its factorization.

133853250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 900 (or 890 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 133853250 is about 11569.4965318289. The cubic root of 133853250 is about 511.5361221049.

The spelling of 133853250 in words is "one hundred thirty-three million, eight hundred fifty-three thousand, two hundred fifty".