72160226 has 4 divisors (see below), whose sum is σ = 108240342. Its totient is φ = 36080112.

The previous prime is 72160217. The next prime is 72160247. The reversal of 72160226 is 62206127.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 58507201 + 13653025 = 7649^2 + 3695^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 72160195 and 72160204.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18040055 + ... + 18040058.

Almost surely, 2^72160226 is an apocalyptic number.

72160226 is a deficient number, since it is larger than the sum of its proper divisors (36080116).

72160226 is a wasteful number, since it uses less digits than its factorization.

72160226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36080115.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 72160226 is about 8494.7175350332. The cubic root of 72160226 is about 416.3251318238.

The spelling of 72160226 in words is "seventy-two million, one hundred sixty thousand, two hundred twenty-six".