72222008 has 16 divisors (see below), whose sum is σ = 135573480. Its totient is φ = 36069088.

The previous prime is 72221953. The next prime is 72222011. The reversal of 72222008 is 80022227.

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 3 ways as a sum of consecutive naturals, for example, 2810 + ... + 12342.

Almost surely, 2^72222008 is an apocalyptic number.

It is an amenable number.

72222008 is a deficient number, since it is larger than the sum of its proper divisors (63351472).

72222008 is a wasteful number, since it uses less digits than its factorization.

72222008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10486 (or 10482 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 23.

The square root of 72222008 is about 8498.3532522483. The cubic root of 72222008 is about 416.4439140741.

The spelling of 72222008 in words is "seventy-two million, two hundred twenty-two thousand, eight".