2229821920 has 24 divisors (see below), whose sum is σ = 5267954664. Its totient is φ = 891928704.

The previous prime is 2229821911. The next prime is 2229821929. The reversal of 2229821920 is 291289222.

It is an interprime number because it is at equal distance from previous prime (2229821911) and next prime (2229821929).

It is a self number, because there is not a number n which added to its sum of digits gives 2229821920.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2229821929) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6968034 + ... + 6968353.

It is an arithmetic number, because the mean of its divisors is an integer number (219498111).

Almost surely, 2^2229821920 is an apocalyptic number.

2229821920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2229821920 is an abundant number, since it is smaller than the sum of its proper divisors (3038132744).

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

2229821920 is a wasteful number, since it uses less digits than its factorization.

2229821920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13936402 (or 13936394 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 2229821920 is about 47220.9902479819. The cubic root of 2229821920 is about 1306.4417783640.

The spelling of 2229821920 in words is "two billion, two hundred twenty-nine million, eight hundred twenty-one thousand, nine hundred twenty".