72630271 has 4 divisors (see below), whose sum is σ = 83006032. Its totient is φ = 62254512.

The previous prime is 72630263. The next prime is 72630289. The reversal of 72630271 is 17203627.

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 72630271 - 2³ = 72630263 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 (72630671) 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, 5187870 + ... + 5187883.

It is an arithmetic number, because the mean of its divisors is an integer number (20751508).

Almost surely, 2^72630271 is an apocalyptic number.

72630271 is a deficient number, since it is larger than the sum of its proper divisors (10375761).

72630271 is a wasteful number, since it uses less digits than its factorization.

72630271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10375760.

The product of its (nonzero) digits is 3528, while the sum is 28.

The square root of 72630271 is about 8522.3395262099. The cubic root of 72630271 is about 417.2271438366.

Adding to 72630271 its reverse (17203627), we get a palindrome (89833898).

The spelling of 72630271 in words is "seventy-two million, six hundred thirty thousand, two hundred seventy-one".