133286672 has 20 divisors (see below), whose sum is σ = 271835280. Its totient is φ = 63135648.

The previous prime is 133286669. The next prime is 133286677. The reversal of 133286672 is 276682331.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is not an unprimeable number, because it can be changed into a prime (133286677) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 218918 + ... + 219525.

It is an arithmetic number, because the mean of its divisors is an integer number (13591764).

Almost surely, 2^133286672 is an apocalyptic number.

It is an amenable number.

133286672 is an abundant number, since it is smaller than the sum of its proper divisors (138548608).

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

133286672 is a wasteful number, since it uses less digits than its factorization.

133286672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438470 (or 438464 counting only the distinct ones).

The product of its digits is 72576, while the sum is 38.

The square root of 133286672 is about 11544.9847119864. The cubic root of 133286672 is about 510.8133529426.

The spelling of 133286672 in words is "one hundred thirty-three million, two hundred eighty-six thousand, six hundred seventy-two".