133912064 has 160 divisors (see below), whose sum is σ = 329978880. Its totient is φ = 53452800.

The previous prime is 133912063. The next prime is 133912069. The reversal of 133912064 is 460219331.

It is a nialpdrome in base 8.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133912063) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2269667 + ... + 2269725.

It is an arithmetic number, because the mean of its divisors is an integer number (2062368).

Almost surely, 2^133912064 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 133912064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (164989440).

133912064 is an abundant number, since it is smaller than the sum of its proper divisors (196066816).

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

133912064 is a wasteful number, since it uses less digits than its factorization.

133912064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132 (or 116 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 133912064 is about 11572.0380227512. The cubic root of 133912064 is about 511.6110327007.

The spelling of 133912064 in words is "one hundred thirty-three million, nine hundred twelve thousand, sixty-four".