72222670 has 32 divisors (see below), whose sum is σ = 140434560. Its totient is φ = 26584320.

The previous prime is 72222659. The next prime is 72222677. The reversal of 72222670 is 7622227.

It is a super-2 number, since 2×72222670² = 10432228123857800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72222677) 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 15 ways as a sum of consecutive naturals, for example, 55386 + ... + 56674.

It is an arithmetic number, because the mean of its divisors is an integer number (4388580).

Almost surely, 2^72222670 is an apocalyptic number.

72222670 is a deficient number, since it is larger than the sum of its proper divisors (68211890).

72222670 is a wasteful number, since it uses less digits than its factorization.

72222670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1740.

The product of its (nonzero) digits is 4704, while the sum is 28.

The square root of 72222670 is about 8498.3922008813. The cubic root of 72222670 is about 416.4451864703.

Adding to 72222670 its reverse (7622227), we get a palindrome (79844897).

The spelling of 72222670 in words is "seventy-two million, two hundred twenty-two thousand, six hundred seventy".