72276775 has 12 divisors (see below), whose sum is σ = 94895712. Its totient is φ = 54419840.

The previous prime is 72276773. The next prime is 72276781. The reversal of 72276775 is 57767227.

It is not a de Polignac number, because 72276775 - 2¹ = 72276773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72276773) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 84607 + ... + 85456.

It is an arithmetic number, because the mean of its divisors is an integer number (7907976).

Almost surely, 2^72276775 is an apocalyptic number.

72276775 is a deficient number, since it is larger than the sum of its proper divisors (22618937).

72276775 is a wasteful number, since it uses less digits than its factorization.

72276775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170090 (or 170085 counting only the distinct ones).

The product of its digits is 288120, while the sum is 43.

The square root of 72276775 is about 8501.5748541079. The cubic root of 72276775 is about 416.5491526380.

The spelling of 72276775 in words is "seventy-two million, two hundred seventy-six thousand, seven hundred seventy-five".