2291222028 has 24 divisors (see below), whose sum is σ = 5518643200. Its totient is φ = 739103760.

The previous prime is 2291222009. The next prime is 2291222029. The reversal of 2291222028 is 8202221922.

It is a junction number, because it is equal to n+sod(n) for n = 2291221986 and 2291222004.

It is not an unprimeable number, because it can be changed into a prime (2291222029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3079228 + ... + 3079971.

Almost surely, 2^2291222028 is an apocalyptic number.

It is an amenable number.

2291222028 is an abundant number, since it is smaller than the sum of its proper divisors (3227421172).

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

2291222028 is a wasteful number, since it uses less digits than its factorization.

2291222028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6159237 (or 6159235 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 2291222028 is about 47866.7110631178. The cubic root of 2291222028 is about 1318.3247089389.

The spelling of 2291222028 in words is "two billion, two hundred ninety-one million, two hundred twenty-two thousand, twenty-eight".