72248222 has 32 divisors (see below), whose sum is σ = 120333600. Its totient is φ = 32393088.

The previous prime is 72248207. The next prime is 72248227. The reversal of 72248222 is 22284227.

It is a super-2 number, since 2×72248222² = 10439611164322568, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72248227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57788 + ... + 59024.

It is an arithmetic number, because the mean of its divisors is an integer number (3760425).

Almost surely, 2^72248222 is an apocalyptic number.

72248222 is a deficient number, since it is larger than the sum of its proper divisors (48085378).

72248222 is a wasteful number, since it uses less digits than its factorization.

72248222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1340.

The product of its digits is 7168, while the sum is 29.

The square root of 72248222 is about 8499.8954111212. The cubic root of 72248222 is about 416.4942927169.

The spelling of 72248222 in words is "seventy-two million, two hundred forty-eight thousand, two hundred twenty-two".