133387144 has 32 divisors (see below), whose sum is σ = 287200800. Its totient is φ = 57438720.

The previous prime is 133387129. The next prime is 133387159. The reversal of 133387144 is 441783331.

It is an interprime number because it is at equal distance from previous prime (133387129) and next prime (133387159).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38217 + ... + 41560.

It is an arithmetic number, because the mean of its divisors is an integer number (8975025).

Almost surely, 2^133387144 is an apocalyptic number.

It is an amenable number.

133387144 is an abundant number, since it is smaller than the sum of its proper divisors (153813656).

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

133387144 is a wasteful number, since it uses less digits than its factorization.

133387144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79813 (or 79809 counting only the distinct ones).

The product of its digits is 24192, while the sum is 34.

The square root of 133387144 is about 11549.3352189639. The cubic root of 133387144 is about 510.9416717213.

The spelling of 133387144 in words is "one hundred thirty-three million, three hundred eighty-seven thousand, one hundred forty-four".