72286481 has 2 divisors, whose sum is σ = 72286482. Its totient is φ = 72286480.

The previous prime is 72286471. The next prime is 72286519. The reversal of 72286481 is 18468227.

It is an a-pointer prime, because the next prime (72286519) can be obtained adding 72286481 to its sum of digits (38).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 72250000 + 36481 = 8500^2 + 191^2 .

It is a cyclic number.

It is not a de Polignac number, because 72286481 - 2¹⁴ = 72270097 is a prime.

It is a super-2 number, since 2×72286481² = 10450670670726722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (72286421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36143240 + 36143241.

It is an arithmetic number, because the mean of its divisors is an integer number (36143241).

Almost surely, 2^72286481 is an apocalyptic number.

It is an amenable number.

72286481 is a deficient number, since it is larger than the sum of its proper divisors (1).

72286481 is an equidigital number, since it uses as much as digits as its factorization.

72286481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 43008, while the sum is 38.

The square root of 72286481 is about 8502.1456703587. The cubic root of 72286481 is about 416.5677978395.

The spelling of 72286481 in words is "seventy-two million, two hundred eighty-six thousand, four hundred eighty-one".