72293361 has 16 divisors (see below), whose sum is σ = 110738304. Its totient is φ = 41094144.

The previous prime is 72293359. The next prime is 72293383. The reversal of 72293361 is 16339227.

It is a happy number.

It is not a de Polignac number, because 72293361 - 2¹ = 72293359 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (72293321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4866 + ... + 12971.

It is an arithmetic number, because the mean of its divisors is an integer number (6921144).

Almost surely, 2^72293361 is an apocalyptic number.

It is an amenable number.

72293361 is a deficient number, since it is larger than the sum of its proper divisors (38444943).

72293361 is a wasteful number, since it uses less digits than its factorization.

72293361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18040.

The product of its digits is 13608, while the sum is 33.

The square root of 72293361 is about 8502.5502644795. The cubic root of 72293361 is about 416.5810132914.

The spelling of 72293361 in words is "seventy-two million, two hundred ninety-three thousand, three hundred sixty-one".