2206513780 has 24 divisors (see below), whose sum is σ = 4667507208. Its totient is φ = 876162048.

The previous prime is 2206513709. The next prime is 2206513781. The reversal of 2206513780 is 873156022.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 535829904 + 1670683876 = 23148^2 + 40874^2 .

It is a super-2 number, since 2×2206513780² = 9737406122659776800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2206513781) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 399909 + ... + 405388.

It is an arithmetic number, because the mean of its divisors is an integer number (194479467).

Almost surely, 2^2206513780 is an apocalyptic number.

2206513780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2206513780 is an abundant number, since it is smaller than the sum of its proper divisors (2460993428).

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

2206513780 is a wasteful number, since it uses less digits than its factorization.

2206513780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 805443 (or 805441 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 2206513780 is about 46973.5434047720. The cubic root of 2206513780 is about 1301.8737830917.

The spelling of 2206513780 in words is "two billion, two hundred six million, five hundred thirteen thousand, seven hundred eighty".