72347936 has 24 divisors (see below), whose sum is σ = 142700544. Its totient is φ = 36106560.

The previous prime is 72347909. The next prime is 72347939. The reversal of 72347936 is 63974327.

It is a junction number, because it is equal to n+sod(n) for n = 72347893 and 72347902.

It is not an unprimeable number, because it can be changed into a prime (72347939) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18401 + ... + 21983.

It is an arithmetic number, because the mean of its divisors is an integer number (5945856).

Almost surely, 2^72347936 is an apocalyptic number.

It is an amenable number.

72347936 is a deficient number, since it is larger than the sum of its proper divisors (70352608).

72347936 is a wasteful number, since it uses less digits than its factorization.

72347936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4224 (or 4216 counting only the distinct ones).

The product of its digits is 190512, while the sum is 41.

The square root of 72347936 is about 8505.7589902371. The cubic root of 72347936 is about 416.6858140179.

The spelling of 72347936 in words is "seventy-two million, three hundred forty-seven thousand, nine hundred thirty-six".