72069226 has 8 divisors (see below), whose sum is σ = 110740644. Its totient is φ = 35155680.

The previous prime is 72069211. The next prime is 72069233. The reversal of 72069226 is 62296027.

It can be written as a sum of positive squares in 2 ways, for example, as 52577001 + 19492225 = 7251^2 + 4415^2 .

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 = 72069191 and 72069200.

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, 439365 + ... + 439528.

Almost surely, 2^72069226 is an apocalyptic number.

72069226 is a deficient number, since it is larger than the sum of its proper divisors (38671418).

72069226 is a wasteful number, since it uses less digits than its factorization.

72069226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 878936.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 72069226 is about 8489.3595753743. The cubic root of 72069226 is about 416.1500514234.

The spelling of 72069226 in words is "seventy-two million, sixty-nine thousand, two hundred twenty-six".