2209615620 has 48 divisors (see below), whose sum is σ = 6189922368. Its totient is φ = 588945280.

The previous prime is 2209615561. The next prime is 2209615643. The reversal of 2209615620 is 265169022.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 135127 + ... + 150593.

It is an arithmetic number, because the mean of its divisors is an integer number (128956716).

Almost surely, 2^2209615620 is an apocalyptic number.

2209615620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2209615620 is an abundant number, since it is smaller than the sum of its proper divisors (3980306748).

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

2209615620 is a wasteful number, since it uses less digits than its factorization.

2209615620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17860 (or 17858 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 2209615620 is about 47006.5486927088. The cubic root of 2209615620 is about 1302.4835403527.

The spelling of 2209615620 in words is "two billion, two hundred nine million, six hundred fifteen thousand, six hundred twenty".