72341447 has 4 divisors (see below), whose sum is σ = 73005240. Its totient is φ = 71677656.

The previous prime is 72341429. The next prime is 72341453. The reversal of 72341447 is 74414327.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 72341447 - 2²⁴ = 55564231 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72341497) 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 3 ways as a sum of consecutive naturals, for example, 331733 + ... + 331950.

It is an arithmetic number, because the mean of its divisors is an integer number (18251310).

Almost surely, 2^72341447 is an apocalyptic number.

72341447 is a deficient number, since it is larger than the sum of its proper divisors (663793).

72341447 is a wasteful number, since it uses less digits than its factorization.

72341447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 663792.

The product of its digits is 18816, while the sum is 32.

The square root of 72341447 is about 8505.3775342427. The cubic root of 72341447 is about 416.6733559104.

The spelling of 72341447 in words is "seventy-two million, three hundred forty-one thousand, four hundred forty-seven".