2211728450 has 24 divisors (see below), whose sum is σ = 4170175428. Its totient is φ = 872570880.

The previous prime is 2211728447. The next prime is 2211728479. The reversal of 2211728450 is 548271122.

It can be written as a sum of positive squares in 6 ways, for example, as 1370554441 + 841174009 = 37021^2 + 29003^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 299327 + ... + 306626.

Almost surely, 2^2211728450 is an apocalyptic number.

2211728450 is a deficient number, since it is larger than the sum of its proper divisors (1958446978).

2211728450 is a wasteful number, since it uses less digits than its factorization.

2211728450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 606038 (or 606033 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 32.

The square root of 2211728450 is about 47029.0171064631. The cubic root of 2211728450 is about 1302.8985521479.

Adding to 2211728450 its reverse (548271122), we get a palindrome (2759999572).

The spelling of 2211728450 in words is "two billion, two hundred eleven million, seven hundred twenty-eight thousand, four hundred fifty".