133971468 has 24 divisors (see below), whose sum is σ = 312867072. Its totient is φ = 44619024.

The previous prime is 133971463. The next prime is 133971469. The reversal of 133971468 is 864179331.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (133971463) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12321 + ... + 20487.

It is an arithmetic number, because the mean of its divisors is an integer number (13036128).

Almost surely, 2^133971468 is an apocalyptic number.

It is an amenable number.

133971468 is an abundant number, since it is smaller than the sum of its proper divisors (178895604).

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

133971468 is a wasteful number, since it uses less digits than its factorization.

133971468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9541 (or 9539 counting only the distinct ones).

The product of its digits is 108864, while the sum is 42.

The square root of 133971468 is about 11574.6044424853. The cubic root of 133971468 is about 511.6866725099.

The spelling of 133971468 in words is "one hundred thirty-three million, nine hundred seventy-one thousand, four hundred sixty-eight".