72230611 has 4 divisors (see below), whose sum is σ = 72251632. Its totient is φ = 72209592.

The previous prime is 72230593. The next prime is 72230657. The reversal of 72230611 is 11603227.

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 72230611 - 2⁵ = 72230579 is a prime.

It is a super-2 number, since 2×72230611² = 10434522330866642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72230311) by changing a digit.

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, 4020 + ... + 12673.

It is an arithmetic number, because the mean of its divisors is an integer number (18062908).

Almost surely, 2^72230611 is an apocalyptic number.

72230611 is a deficient number, since it is larger than the sum of its proper divisors (21021).

72230611 is a wasteful number, since it uses less digits than its factorization.

72230611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21020.

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 72230611 is about 8498.8593940599. The cubic root of 72230611 is about 416.4604488527.

Adding to 72230611 its reverse (11603227), we get a palindrome (83833838).

The spelling of 72230611 in words is "seventy-two million, two hundred thirty thousand, six hundred eleven".