72273763 has 4 divisors (see below), whose sum is σ = 72379048. Its totient is φ = 72168480.

The previous prime is 72273757. The next prime is 72273767. The reversal of 72273763 is 36737227.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36737227 = 733 ⋅50119.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72273763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72273767) 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, 51606 + ... + 52987.

It is an arithmetic number, because the mean of its divisors is an integer number (18094762).

Almost surely, 2^72273763 is an apocalyptic number.

72273763 is a deficient number, since it is larger than the sum of its proper divisors (105285).

72273763 is a wasteful number, since it uses less digits than its factorization.

72273763 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105284.

The product of its digits is 74088, while the sum is 37.

The square root of 72273763 is about 8501.3977086124. The cubic root of 72273763 is about 416.5433662542.

The spelling of 72273763 in words is "seventy-two million, two hundred seventy-three thousand, seven hundred sixty-three".