133243488 has 96 divisors (see below), whose sum is σ = 444165120. Its totient is φ = 38067840.

The previous prime is 133243471. The next prime is 133243493. The reversal of 133243488 is 884342331.

It is a happy number.

133243488 is a `hidden beast` number, since 133 + 2 + 43 + 488 = 666.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×133243488² = 35507654188812288, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4968 + ... + 17063.

It is an arithmetic number, because the mean of its divisors is an integer number (4626720).

Almost surely, 2^133243488 is an apocalyptic number.

133243488 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

133243488 is an abundant number, since it is smaller than the sum of its proper divisors (310921632).

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

133243488 is a wasteful number, since it uses less digits than its factorization.

133243488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22057 (or 22043 counting only the distinct ones).

The product of its digits is 55296, while the sum is 36.

The square root of 133243488 is about 11543.1143111380. The cubic root of 133243488 is about 510.7581802679.

The spelling of 133243488 in words is "one hundred thirty-three million, two hundred forty-three thousand, four hundred eighty-eight".