72340473 has 8 divisors (see below), whose sum is σ = 98506368. Its totient is φ = 47200784.

The previous prime is 72340447. The next prime is 72340481. The reversal of 72340473 is 37404327.

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

It is not a de Polignac number, because 72340473 - 2¹⁸ = 72078329 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 72340473.

It is not an unprimeable number, because it can be changed into a prime (72340403) 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 7 ways as a sum of consecutive naturals, for example, 256386 + ... + 256667.

It is an arithmetic number, because the mean of its divisors is an integer number (12313296).

Almost surely, 2^72340473 is an apocalyptic number.

It is an amenable number.

72340473 is a deficient number, since it is larger than the sum of its proper divisors (26165895).

72340473 is a wasteful number, since it uses less digits than its factorization.

72340473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 513103.

The product of its (nonzero) digits is 14112, while the sum is 30.

The square root of 72340473 is about 8505.3202761566. The cubic root of 72340473 is about 416.6714858820.

The spelling of 72340473 in words is "seventy-two million, three hundred forty thousand, four hundred seventy-three".