133863450 has 144 divisors (see below), whose sum is σ = 398266176. Its totient is φ = 29145600.

The previous prime is 133863413. The next prime is 133863451. The reversal of 133863450 is 54368331.

It is not an unprimeable number, because it can be changed into a prime (133863451) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 555330 + ... + 555570.

Almost surely, 2^133863450 is an apocalyptic number.

133863450 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 133863450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (199133088).

133863450 is an abundant number, since it is smaller than the sum of its proper divisors (264402726).

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

133863450 is a wasteful number, since it uses less digits than its factorization.

133863450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309 (or 281 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 33.

The square root of 133863450 is about 11569.9373377733. The cubic root of 133863450 is about 511.5491152794.

It can be divided in two parts, 13386 and 3450, that added together give a triangular number (16836 = T₁₈₃).

The spelling of 133863450 in words is "one hundred thirty-three million, eight hundred sixty-three thousand, four hundred fifty".