133988450 has 18 divisors (see below), whose sum is σ = 249370851. Its totient is φ = 53562640.

The previous prime is 133988443. The next prime is 133988467. The reversal of 133988450 is 54889331.

It can be written as a sum of positive squares in 5 ways, for example, as 146689 + 133841761 = 383^2 + 11569^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=8185.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 133988398 and 133988407.

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 8 ways as a sum of consecutive naturals, for example, 81032 + ... + 82668.

Almost surely, 2^133988450 is an apocalyptic number.

133988450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

133988450 is a deficient number, since it is larger than the sum of its proper divisors (115382401).

133988450 is an frugal number, since it uses more digits than its factorization.

133988450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3286 (or 1644 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 41.

The square root of 133988450 is about 11575.3380080238. The cubic root of 133988450 is about 511.7082917797.

The spelling of 133988450 in words is "one hundred thirty-three million, nine hundred eighty-eight thousand, four hundred fifty".