72232447 has 16 divisors (see below), whose sum is σ = 85377600. Its totient is φ = 59823360.

The previous prime is 72232429. The next prime is 72232453. The reversal of 72232447 is 74423227.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72232447 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72232477) 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 15 ways as a sum of consecutive naturals, for example, 30129 + ... + 32437.

It is an arithmetic number, because the mean of its divisors is an integer number (5336100).

Almost surely, 2^72232447 is an apocalyptic number.

72232447 is a deficient number, since it is larger than the sum of its proper divisors (13145153).

72232447 is a wasteful number, since it uses less digits than its factorization.

72232447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2466.

The product of its digits is 18816, while the sum is 31.

The square root of 72232447 is about 8498.9674078679. The cubic root of 72232447 is about 416.4639774347.

The spelling of 72232447 in words is "seventy-two million, two hundred thirty-two thousand, four hundred forty-seven".