72192605 has 4 divisors (see below), whose sum is σ = 86631132. Its totient is φ = 57754080.

The previous prime is 72192599. The next prime is 72192619. The reversal of 72192605 is 50629127.

72192605 is nontrivially palindromic in base 14.

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

It can be written as a sum of positive squares in 2 ways, for example, as 14341369 + 57851236 = 3787^2 + 7606^2 .

It is not a de Polignac number, because 72192605 - 2¹⁸ = 71930461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7219256 + ... + 7219265.

It is an arithmetic number, because the mean of its divisors is an integer number (21657783).

Almost surely, 2^72192605 is an apocalyptic number.

It is an amenable number.

72192605 is a deficient number, since it is larger than the sum of its proper divisors (14438527).

72192605 is a wasteful number, since it uses less digits than its factorization.

72192605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14438526.

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 72192605 is about 8496.6231527590. The cubic root of 72192605 is about 416.3873922335.

The spelling of 72192605 in words is "seventy-two million, one hundred ninety-two thousand, six hundred five".