138226370 has 8 divisors (see below), whose sum is σ = 248807484. Its totient is φ = 55290544.

The previous prime is 138226369. The next prime is 138226397. The reversal of 138226370 is 73622831.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 128572921 + 9653449 = 11339^2 + 3107^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6911309 + ... + 6911328.

Almost surely, 2^138226370 is an apocalyptic number.

138226370 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

138226370 is a deficient number, since it is larger than the sum of its proper divisors (110581114).

138226370 is a wasteful number, since it uses less digits than its factorization.

138226370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13822644.

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 138226370 is about 11756.9711235505. The cubic root of 138226370 is about 517.0473314468.

The spelling of 138226370 in words is "one hundred thirty-eight million, two hundred twenty-six thousand, three hundred seventy".