133240460 has 24 divisors (see below), whose sum is σ = 280022400. Its totient is φ = 53254784.

The previous prime is 133240453. The next prime is 133240469. The reversal of 133240460 is 64042331.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (133240469) 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, 46592 + ... + 49368.

It is an arithmetic number, because the mean of its divisors is an integer number (11667600).

Almost surely, 2^133240460 is an apocalyptic number.

133240460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133240460 is an abundant number, since it is smaller than the sum of its proper divisors (146781940).

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

133240460 is a wasteful number, since it uses less digits than its factorization.

133240460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5185 (or 5183 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 133240460 is about 11542.9831499487. The cubic root of 133240460 is about 510.7543111921.

Adding to 133240460 its reverse (64042331), we get a palindrome (197282791).

The spelling of 133240460 in words is "one hundred thirty-three million, two hundred forty thousand, four hundred sixty".