2221927640 has 32 divisors (see below), whose sum is σ = 5262462000. Its totient is φ = 841993344.

The previous prime is 2221927619. The next prime is 2221927657. The reversal of 2221927640 is 467291222.

It is a self number, because there is not a number n which added to its sum of digits gives 2221927640.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1461035 + ... + 1462554.

Almost surely, 2^2221927640 is an apocalyptic number.

2221927640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2221927640 is an abundant number, since it is smaller than the sum of its proper divisors (3040534360).

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

2221927640 is a wasteful number, since it uses less digits than its factorization.

2221927640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2923619 (or 2923615 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 2221927640 is about 47137.3274592440. The cubic root of 2221927640 is about 1304.8982153210.

The spelling of 2221927640 in words is "two billion, two hundred twenty-one million, nine hundred twenty-seven thousand, six hundred forty".