72386273 has 2 divisors, whose sum is σ = 72386274. Its totient is φ = 72386272.

The previous prime is 72386261. The next prime is 72386299. The reversal of 72386273 is 37268327.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 72301009 + 85264 = 8503^2 + 292^2 .

It is a cyclic number.

It is not a de Polignac number, because 72386273 - 2¹⁰ = 72385249 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (72386203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36193136 + 36193137.

It is an arithmetic number, because the mean of its divisors is an integer number (36193137).

Almost surely, 2^72386273 is an apocalyptic number.

It is an amenable number.

72386273 is a deficient number, since it is larger than the sum of its proper divisors (1).

72386273 is an equidigital number, since it uses as much as digits as its factorization.

72386273 is an evil number, because the sum of its binary digits is even.

The product of its digits is 84672, while the sum is 38.

The square root of 72386273 is about 8508.0122825487. The cubic root of 72386273 is about 416.7594012969.

The spelling of 72386273 in words is "seventy-two million, three hundred eighty-six thousand, two hundred seventy-three".