133897272 has 16 divisors (see below), whose sum is σ = 334743240. Its totient is φ = 44632416.

The previous prime is 133897261. The next prime is 133897273. The reversal of 133897272 is 272798331.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133897273) 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, 2789503 + ... + 2789550.

Almost surely, 2^133897272 is an apocalyptic number.

133897272 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

133897272 is an abundant number, since it is smaller than the sum of its proper divisors (200845968).

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

133897272 is a wasteful number, since it uses less digits than its factorization.

133897272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5579062 (or 5579058 counting only the distinct ones).

The product of its digits is 127008, while the sum is 42.

The square root of 133897272 is about 11571.3988782688. The cubic root of 133897272 is about 511.5921943953.

The spelling of 133897272 in words is "one hundred thirty-three million, eight hundred ninety-seven thousand, two hundred seventy-two".