2722206520 has 32 divisors (see below), whose sum is σ = 6681780720. Its totient is φ = 989893120.

The previous prime is 2722206517. The next prime is 2722206637. The reversal of 2722206520 is 256022272.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3092977 + ... + 3093856.

Almost surely, 2^2722206520 is an apocalyptic number.

2722206520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2722206520 is an abundant number, since it is smaller than the sum of its proper divisors (3959574200).

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

2722206520 is a wasteful number, since it uses less digits than its factorization.

2722206520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6186855 (or 6186851 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 2722206520 is about 52174.7689980512. The cubic root of 2722206520 is about 1396.2837700321.

Adding to 2722206520 its reverse (256022272), we get a palindrome (2978228792).

The spelling of 2722206520 in words is "two billion, seven hundred twenty-two million, two hundred six thousand, five hundred twenty".