72573269 has 4 divisors (see below), whose sum is σ = 72599340. Its totient is φ = 72547200.

The previous prime is 72573251. The next prime is 72573299. The reversal of 72573269 is 96237527.

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 66994225 + 5579044 = 8185^2 + 2362^2 .

It is a cyclic number.

It is not a de Polignac number, because 72573269 - 2⁸ = 72573013 is a prime.

It is a super-2 number, since 2×72573269² = 10533758746692722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72573229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8282 + ... + 14619.

It is an arithmetic number, because the mean of its divisors is an integer number (18149835).

Almost surely, 2^72573269 is an apocalyptic number.

It is an amenable number.

72573269 is a deficient number, since it is larger than the sum of its proper divisors (26071).

72573269 is a wasteful number, since it uses less digits than its factorization.

72573269 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26070.

The product of its digits is 158760, while the sum is 41.

The square root of 72573269 is about 8518.9946003035. The cubic root of 72573269 is about 417.1179652723.

The spelling of 72573269 in words is "seventy-two million, five hundred seventy-three thousand, two hundred sixty-nine".