2247721240 has 32 divisors (see below), whose sum is σ = 5064904080. Its totient is φ = 897749632.

The previous prime is 2247721237. The next prime is 2247721243. The reversal of 2247721240 is 421277422.

It is an interprime number because it is at equal distance from previous prime (2247721237) and next prime (2247721243).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2247721243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14422 + ... + 68581.

Almost surely, 2^2247721240 is an apocalyptic number.

2247721240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2247721240 is an abundant number, since it is smaller than the sum of its proper divisors (2817182840).

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

2247721240 is a wasteful number, since it uses less digits than its factorization.

2247721240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83691 (or 83687 counting only the distinct ones).

The product of its (nonzero) digits is 12544, while the sum is 31.

The square root of 2247721240 is about 47410.1385781565. The cubic root of 2247721240 is about 1309.9281742955.

Adding to 2247721240 its reverse (421277422), we get a palindrome (2668998662).

The spelling of 2247721240 in words is "two billion, two hundred forty-seven million, seven hundred twenty-one thousand, two hundred forty".