2245445220 has 48 divisors (see below), whose sum is σ = 6310664640. Its totient is φ = 596555136.

The previous prime is 2245445171. The next prime is 2245445281. The reversal of 2245445220 is 225445422.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53422 + ... + 85701.

It is an arithmetic number, because the mean of its divisors is an integer number (131472180).

Almost surely, 2^2245445220 is an apocalyptic number.

2245445220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2245445220 is an abundant number, since it is smaller than the sum of its proper divisors (4065219420).

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

2245445220 is a wasteful number, since it uses less digits than its factorization.

2245445220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139404 (or 139402 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 30.

The square root of 2245445220 is about 47386.1289830685. The cubic root of 2245445220 is about 1309.4858849291.

The spelling of 2245445220 in words is "two billion, two hundred forty-five million, four hundred forty-five thousand, two hundred twenty".