138222433 has 8 divisors (see below), whose sum is σ = 144388800. Its totient is φ = 132069168.

The previous prime is 138222431. The next prime is 138222467. The reversal of 138222433 is 334222831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 138222433 - 2¹ = 138222431 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138222431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22798 + ... + 28216.

It is an arithmetic number, because the mean of its divisors is an integer number (18048600).

Almost surely, 2^138222433 is an apocalyptic number.

It is an amenable number.

138222433 is a deficient number, since it is larger than the sum of its proper divisors (6166367).

138222433 is a wasteful number, since it uses less digits than its factorization.

138222433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6551.

The product of its digits is 6912, while the sum is 28.

The square root of 138222433 is about 11756.8036897790. The cubic root of 138222433 is about 517.0424225073.

The spelling of 138222433 in words is "one hundred thirty-eight million, two hundred twenty-two thousand, four hundred thirty-three".