15138226 has 8 divisors (see below), whose sum is σ = 22873500. Its totient is φ = 7513728.

The previous prime is 15138197. The next prime is 15138239. The reversal of 15138226 is 62283151.

It can be written as a sum of positive squares in 2 ways, for example, as 14830201 + 308025 = 3851^2 + 555^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 15138194 and 15138203.

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, 27351 + ... + 27898.

Almost surely, 2^15138226 is an apocalyptic number.

15138226 is a deficient number, since it is larger than the sum of its proper divisors (7735274).

15138226 is a wasteful number, since it uses less digits than its factorization.

15138226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55388.

The product of its digits is 2880, while the sum is 28.

The square root of 15138226 is about 3890.7873239230. The cubic root of 15138226 is about 247.3764359574.

The spelling of 15138226 in words is "fifteen million, one hundred thirty-eight thousand, two hundred twenty-six".