2221947304 has 8 divisors (see below), whose sum is σ = 4166151210. Its totient is φ = 1110973648.

The previous prime is 2221947293. The next prime is 2221947323. The reversal of 2221947304 is 4037491222.

It can be written as a sum of positive squares in only one way, i.e., 2218598404 + 3348900 = 47102^2 + 1830^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 2221947304.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 138871699 + ... + 138871714.

Almost surely, 2^2221947304 is an apocalyptic number.

It is an amenable number.

2221947304 is a deficient number, since it is larger than the sum of its proper divisors (1944203906).

2221947304 is a wasteful number, since it uses less digits than its factorization.

2221947304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277743419 (or 277743415 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 2221947304 is about 47137.5360408242. The cubic root of 2221947304 is about 1304.9020647477.

The spelling of 2221947304 in words is "two billion, two hundred twenty-one million, nine hundred forty-seven thousand, three hundred four".