2178222072 has 48 divisors (see below), whose sum is σ = 5896677240. Its totient is φ = 670220928.

The previous prime is 2178222043. The next prime is 2178222083. The reversal of 2178222072 is 2702228712.

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, 264463 + ... + 272574.

Almost surely, 2^2178222072 is an apocalyptic number.

It is an amenable number.

2178222072 is an abundant number, since it is smaller than the sum of its proper divisors (3718455168).

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

2178222072 is a wasteful number, since it uses less digits than its factorization.

2178222072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 537072 (or 537055 counting only the distinct ones).

The product of its (nonzero) digits is 12544, while the sum is 33.

The square root of 2178222072 is about 46671.4267191394. The cubic root of 2178222072 is about 1296.2856642431.

The spelling of 2178222072 in words is "two billion, one hundred seventy-eight million, two hundred twenty-two thousand, seventy-two".