72223072 has 24 divisors (see below), whose sum is σ = 150554376. Its totient is φ = 33987072.

The previous prime is 72223069. The next prime is 72223091. The reversal of 72223072 is 27032227.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65838 + ... + 66925.

It is an arithmetic number, because the mean of its divisors is an integer number (6273099).

Almost surely, 2^72223072 is an apocalyptic number.

It is an amenable number.

72223072 is an abundant number, since it is smaller than the sum of its proper divisors (78331304).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72223072 is a wasteful number, since it uses less digits than its factorization.

72223072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132790 (or 132782 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 25.

The square root of 72223072 is about 8498.4158523810. The cubic root of 72223072 is about 416.4459591301.

Adding to 72223072 its reverse (27032227), we get a palindrome (99255299).

The spelling of 72223072 in words is "seventy-two million, two hundred twenty-three thousand, seventy-two".