72064726 has 4 divisors (see below), whose sum is σ = 108097092. Its totient is φ = 36032362.

The previous prime is 72064721. The next prime is 72064747. The reversal of 72064726 is 62746027.

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

It is a junction number, because it is equal to n+sod(n) for n = 72064691 and 72064700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72064721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18016180 + ... + 18016183.

It is an arithmetic number, because the mean of its divisors is an integer number (27024273).

Almost surely, 2^72064726 is an apocalyptic number.

72064726 is a deficient number, since it is larger than the sum of its proper divisors (36032366).

72064726 is a wasteful number, since it uses less digits than its factorization.

72064726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36032365.

The product of its (nonzero) digits is 28224, while the sum is 34.

The square root of 72064726 is about 8489.0945335766. The cubic root of 72064726 is about 416.1413897781.

The spelling of 72064726 in words is "seventy-two million, sixty-four thousand, seven hundred twenty-six".