133780927 has 12 divisors (see below), whose sum is σ = 156423960. Its totient is φ = 114079056.

The previous prime is 133780921. The next prime is 133780931. The reversal of 133780927 is 729087331.

133780927 is nontrivially palindromic in base 8.

It is a de Polignac number, because none of the positive numbers 2^k-133780927 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 133780927.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133780921) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2724 + ... + 16582.

It is an arithmetic number, because the mean of its divisors is an integer number (13035330).

Almost surely, 2^133780927 is an apocalyptic number.

133780927 is a deficient number, since it is larger than the sum of its proper divisors (22643033).

133780927 is a wasteful number, since it uses less digits than its factorization.

133780927 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14070 (or 14063 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 40.

The square root of 133780927 is about 11566.3705197439. The cubic root of 133780927 is about 511.4439751900.

The spelling of 133780927 in words is "one hundred thirty-three million, seven hundred eighty thousand, nine hundred twenty-seven".