72240763 has 4 divisors (see below), whose sum is σ = 82560880. Its totient is φ = 61920648.

The previous prime is 72240743. The next prime is 72240767. The reversal of 72240763 is 36704227.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 72240763 - 2⁹ = 72240251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72240767) 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, 5160048 + ... + 5160061.

It is an arithmetic number, because the mean of its divisors is an integer number (20640220).

Almost surely, 2^72240763 is an apocalyptic number.

72240763 is a deficient number, since it is larger than the sum of its proper divisors (10320117).

72240763 is a wasteful number, since it uses less digits than its factorization.

72240763 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10320116.

The product of its (nonzero) digits is 14112, while the sum is 31.

The square root of 72240763 is about 8499.4566296911. The cubic root of 72240763 is about 416.4799590869.

The spelling of 72240763 in words is "seventy-two million, two hundred forty thousand, seven hundred sixty-three".