7220003812 has 12 divisors (see below), whose sum is σ = 14440007680. Its totient is φ = 3094287336.

The previous prime is 7220003809. The next prime is 7220003831. The reversal of 7220003812 is 2183000227.

7220003812 is an admirable 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, 128928612 + ... + 128928667.

Almost surely, 2^7220003812 is an apocalyptic number.

It is an amenable number.

7220003812 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

7220003812 is a wasteful number, since it uses less digits than its factorization.

7220003812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257857290 (or 257857288 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 7220003812 is about 84970.6055762815. The cubic root of 7220003812 is about 1932.7653997154.

The spelling of 7220003812 in words is "seven billion, two hundred twenty million, three thousand, eight hundred twelve".