72216494 has 12 divisors (see below), whose sum is σ = 126010584. Its totient is φ = 30949884.

The previous prime is 72216449. The next prime is 72216499. The reversal of 72216494 is 49461227.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72216499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 368354 + ... + 368549.

It is an arithmetic number, because the mean of its divisors is an integer number (10500882).

Almost surely, 2^72216494 is an apocalyptic number.

72216494 is a deficient number, since it is larger than the sum of its proper divisors (53794090).

72216494 is a wasteful number, since it uses less digits than its factorization.

72216494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 736919 (or 736912 counting only the distinct ones).

The product of its digits is 24192, while the sum is 35.

The square root of 72216494 is about 8498.0288302641. The cubic root of 72216494 is about 416.4333155956.

The spelling of 72216494 in words is "seventy-two million, two hundred sixteen thousand, four hundred ninety-four".