72207347 has 16 divisors (see below), whose sum is σ = 78343200. Its totient is φ = 66301440.

The previous prime is 72207329. The next prime is 72207367. The reversal of 72207347 is 74370227.

It is a cyclic number.

It is not a de Polignac number, because 72207347 - 2¹² = 72203251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72207367) 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, 185429 + ... + 185817.

It is an arithmetic number, because the mean of its divisors is an integer number (4896450).

Almost surely, 2^72207347 is an apocalyptic number.

72207347 is a deficient number, since it is larger than the sum of its proper divisors (6135853).

72207347 is a wasteful number, since it uses less digits than its factorization.

72207347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 646.

The product of its (nonzero) digits is 16464, while the sum is 32.

The square root of 72207347 is about 8497.4906295918. The cubic root of 72207347 is about 416.4157329255.

The spelling of 72207347 in words is "seventy-two million, two hundred seven thousand, three hundred forty-seven".