133127780 has 24 divisors (see below), whose sum is σ = 280748160. Its totient is φ = 53026400.

The previous prime is 133127741. The next prime is 133127783. The reversal of 133127780 is 87721331.

It is not an unprimeable number, because it can be changed into a prime (133127783) 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, 9146 + ... + 18705.

It is an arithmetic number, because the mean of its divisors is an integer number (11697840).

Almost surely, 2^133127780 is an apocalyptic number.

133127780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133127780 is an abundant number, since it is smaller than the sum of its proper divisors (147620380).

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

133127780 is a wasteful number, since it uses less digits than its factorization.

133127780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28099 (or 28097 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 32.

The square root of 133127780 is about 11538.1012302718. The cubic root of 133127780 is about 510.6102908071.

The spelling of 133127780 in words is "one hundred thirty-three million, one hundred twenty-seven thousand, seven hundred eighty".