138001227 has 32 divisors (see below), whose sum is σ = 234286080. Its totient is φ = 70277760.

The previous prime is 138001211. The next prime is 138001247. The reversal of 138001227 is 722100831.

It is not a de Polignac number, because 138001227 - 2⁴ = 138001211 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 138001197 and 138001206.

It is not an unprimeable number, because it can be changed into a prime (138001207) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 799 + ... + 16632.

It is an arithmetic number, because the mean of its divisors is an integer number (7321440).

Almost surely, 2^138001227 is an apocalyptic number.

138001227 is a deficient number, since it is larger than the sum of its proper divisors (96284853).

138001227 is a wasteful number, since it uses less digits than its factorization.

138001227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17483.

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 138001227 is about 11747.3923489428. The cubic root of 138001227 is about 516.7664568032.

The spelling of 138001227 in words is "one hundred thirty-eight million, one thousand, two hundred twenty-seven".