133389460 has 12 divisors (see below), whose sum is σ = 280117908. Its totient is φ = 53355776.

The previous prime is 133389449. The next prime is 133389461. The reversal of 133389460 is 64983331.

It can be written as a sum of positive squares in 2 ways, for example, as 96471684 + 36917776 = 9822^2 + 6076^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133389461) 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, 3334717 + ... + 3334756.

It is an arithmetic number, because the mean of its divisors is an integer number (23343159).

Almost surely, 2^133389460 is an apocalyptic number.

133389460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133389460 is an abundant number, since it is smaller than the sum of its proper divisors (146728448).

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

133389460 is a wasteful number, since it uses less digits than its factorization.

133389460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6669482 (or 6669480 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 37.

The square root of 133389460 is about 11549.4354840399. The cubic root of 133389460 is about 510.9446288631.

The spelling of 133389460 in words is "one hundred thirty-three million, three hundred eighty-nine thousand, four hundred sixty".