72256703 has 4 divisors (see below), whose sum is σ = 72306720. Its totient is φ = 72206688.

The previous prime is 72256699. The next prime is 72256711. The reversal of 72256703 is 30765227.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30765227 = 827 ⋅37201.

It is a cyclic number.

It is not a de Polignac number, because 72256703 - 2² = 72256699 is a prime.

It is a super-2 number, since 2×72256703² = 10442062256860418, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 72256703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72256733) 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, 22775 + ... + 25752.

It is an arithmetic number, because the mean of its divisors is an integer number (18076680).

Almost surely, 2^72256703 is an apocalyptic number.

72256703 is a deficient number, since it is larger than the sum of its proper divisors (50017).

72256703 is a wasteful number, since it uses less digits than its factorization.

72256703 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50016.

The product of its (nonzero) digits is 17640, while the sum is 32.

The square root of 72256703 is about 8500.3942849729. The cubic root of 72256703 is about 416.5105890806.

The spelling of 72256703 in words is "seventy-two million, two hundred fifty-six thousand, seven hundred three".