72297416 has 16 divisors (see below), whose sum is σ = 136901340. Its totient is φ = 35790400.

The previous prime is 72297367. The next prime is 72297419. The reversal of 72297416 is 61479227.

It can be written as a sum of positive squares in 2 ways, for example, as 71740900 + 556516 = 8470^2 + 746^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 72297416.

It is not an unprimeable number, because it can be changed into a prime (72297419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43931 + ... + 45546.

Almost surely, 2^72297416 is an apocalyptic number.

It is an amenable number.

72297416 is a deficient number, since it is larger than the sum of its proper divisors (64603924).

72297416 is a wasteful number, since it uses less digits than its factorization.

72297416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89584 (or 89580 counting only the distinct ones).

The product of its digits is 42336, while the sum is 38.

The square root of 72297416 is about 8502.7887190027. The cubic root of 72297416 is about 416.5888019477.

The spelling of 72297416 in words is "seventy-two million, two hundred ninety-seven thousand, four hundred sixteen".