138750226 has 8 divisors (see below), whose sum is σ = 220368060. Its totient is φ = 65294208.

The previous prime is 138750193. The next prime is 138750229. The reversal of 138750226 is 622057831.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 138086001 + 664225 = 11751^2 + 815^2 .

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

It is a Harshad number since it is a multiple of its sum of digits (34), and also a Moran number because the ratio is a prime number: 4080889 = 138750226 / (1 + 3 + 8 + 7 + 5 + 0 + 2 + 2 + 6).

It is a junction number, because it is equal to n+sod(n) for n = 138750191 and 138750200.

It is not an unprimeable number, because it can be changed into a prime (138750229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2040411 + ... + 2040478.

Almost surely, 2^138750226 is an apocalyptic number.

138750226 is a deficient number, since it is larger than the sum of its proper divisors (81617834).

138750226 is a wasteful number, since it uses less digits than its factorization.

138750226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4080908.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 138750226 is about 11779.2285825516. The cubic root of 138750226 is about 517.6996838053.

The spelling of 138750226 in words is "one hundred thirty-eight million, seven hundred fifty thousand, two hundred twenty-six".