133861244 has 24 divisors (see below), whose sum is σ = 255956736. Its totient is φ = 60750000.

The previous prime is 133861229. The next prime is 133861319. The reversal of 133861244 is 442168331.

It is a self number, because there is not a number n which added to its sum of digits gives 133861244.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31019 + ... + 35069.

It is an arithmetic number, because the mean of its divisors is an integer number (10664864).

Almost surely, 2^133861244 is an apocalyptic number.

It is an amenable number.

133861244 is a deficient number, since it is larger than the sum of its proper divisors (122095492).

133861244 is a wasteful number, since it uses less digits than its factorization.

133861244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4817 (or 4815 counting only the distinct ones).

The product of its digits is 13824, while the sum is 32.

The square root of 133861244 is about 11569.8420041071. The cubic root of 133861244 is about 511.5463052429.

The spelling of 133861244 in words is "one hundred thirty-three million, eight hundred sixty-one thousand, two hundred forty-four".