72357423 has 32 divisors (see below), whose sum is σ = 105235200. Its totient is φ = 44054016.

The previous prime is 72357421. The next prime is 72357427. The reversal of 72357423 is 32475327.

It is not a de Polignac number, because 72357423 - 2¹ = 72357421 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72357421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 418165 + ... + 418337.

It is an arithmetic number, because the mean of its divisors is an integer number (3288600).

Almost surely, 2^72357423 is an apocalyptic number.

72357423 is a deficient number, since it is larger than the sum of its proper divisors (32877777).

72357423 is a wasteful number, since it uses less digits than its factorization.

72357423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391.

The product of its digits is 35280, while the sum is 33.

The square root of 72357423 is about 8506.3166529350. The cubic root of 72357423 is about 416.7040265878.

The spelling of 72357423 in words is "seventy-two million, three hundred fifty-seven thousand, four hundred twenty-three".