2209767340 has 72 divisors (see below), whose sum is σ = 5123926080. Its totient is φ = 799898880.

The previous prime is 2209767337. The next prime is 2209767353. The reversal of 2209767340 is 437679022.

It is a junction number, because it is equal to n+sod(n) for n = 2209767293 and 2209767302.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 561901 + ... + 565819.

It is an arithmetic number, because the mean of its divisors is an integer number (71165640).

Almost surely, 2^2209767340 is an apocalyptic number.

2209767340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2209767340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2561963040).

2209767340 is an abundant number, since it is smaller than the sum of its proper divisors (2914158740).

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

2209767340 is a wasteful number, since it uses less digits than its factorization.

2209767340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4183 (or 4170 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 40.

The square root of 2209767340 is about 47008.1624827008. The cubic root of 2209767340 is about 1302.5133507080.

The spelling of 2209767340 in words is "two billion, two hundred nine million, seven hundred sixty-seven thousand, three hundred forty".