72223678 has 24 divisors (see below), whose sum is σ = 113051232. Its totient is φ = 34586112.

The previous prime is 72223661. The next prime is 72223681. The reversal of 72223678 is 87632227.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 744526 + ... + 744622.

It is an arithmetic number, because the mean of its divisors is an integer number (4710468).

Almost surely, 2^72223678 is an apocalyptic number.

72223678 is a deficient number, since it is larger than the sum of its proper divisors (40827554).

72223678 is an equidigital number, since it uses as much as digits as its factorization.

72223678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324 (or 235 counting only the distinct ones).

The product of its digits is 56448, while the sum is 37.

The square root of 72223678 is about 8498.4515060098. The cubic root of 72223678 is about 416.4471238804.

The spelling of 72223678 in words is "seventy-two million, two hundred twenty-three thousand, six hundred seventy-eight".