133173800 has 48 divisors (see below), whose sum is σ = 320319900. Its totient is φ = 51430400.

The previous prime is 133173791. The next prime is 133173811. The reversal of 133173800 is 8371331.

It can be written as a sum of positive squares in 6 ways, for example, as 62378404 + 70795396 = 7898^2 + 8414^2 .

It is a super-2 number, since 2×133173800² = 35470522012880000, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 133173800.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5681 + ... + 17280.

Almost surely, 2^133173800 is an apocalyptic number.

133173800 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133173800 is an abundant number, since it is smaller than the sum of its proper divisors (187146100).

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

133173800 is a wasteful number, since it uses less digits than its factorization.

133173800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23006 (or 22997 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 133173800 is about 11540.0953202302. The cubic root of 133173800 is about 510.6691204479.

The spelling of 133173800 in words is "one hundred thirty-three million, one hundred seventy-three thousand, eight hundred".