72504211 has 18 divisors (see below), whose sum is σ = 82173588. Its totient is φ = 63938160.

The previous prime is 72504203. The next prime is 72504217. The reversal of 72504211 is 11240527.

It is a happy number.

It is not a de Polignac number, because 72504211 - 2³ = 72504203 is a prime.

It is a super-2 number, since 2×72504211² = 10513721225465042, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72504217) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 88996 + ... + 89806.

Almost surely, 2^72504211 is an apocalyptic number.

72504211 is a deficient number, since it is larger than the sum of its proper divisors (9669377).

72504211 is a wasteful number, since it uses less digits than its factorization.

72504211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 883 (or 847 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 22.

The square root of 72504211 is about 8514.9404578071. The cubic root of 72504211 is about 416.9856186825.

Adding to 72504211 its reverse (11240527), we get a palindrome (83744738).

The spelling of 72504211 in words is "seventy-two million, five hundred four thousand, two hundred eleven".