72213347 has 8 divisors (see below), whose sum is σ = 73410240. Its totient is φ = 71023680.

The previous prime is 72213329. The next prime is 72213359. The reversal of 72213347 is 74331227.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 72213347 - 2¹⁰ = 72212323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72213367) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20573 + ... + 23825.

It is an arithmetic number, because the mean of its divisors is an integer number (9176280).

Almost surely, 2^72213347 is an apocalyptic number.

72213347 is a deficient number, since it is larger than the sum of its proper divisors (1196893).

72213347 is a wasteful number, since it uses less digits than its factorization.

72213347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3613.

The product of its digits is 7056, while the sum is 29.

The square root of 72213347 is about 8497.8436676606. The cubic root of 72213347 is about 416.4272664943.

The spelling of 72213347 in words is "seventy-two million, two hundred thirteen thousand, three hundred forty-seven".