2196979220 has 48 divisors (see below), whose sum is σ = 4729061568. Its totient is φ = 856880640.

The previous prime is 2196979189. The next prime is 2196979231. The reversal of 2196979220 is 229796912.

It is a super-2 number, since 2×2196979220² = 9653435386223616800, which contains 22 as substring.

It is a congruent number.

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, 592412 + ... + 596108.

It is an arithmetic number, because the mean of its divisors is an integer number (98522116).

Almost surely, 2^2196979220 is an apocalyptic number.

2196979220 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 2196979220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2364530784).

2196979220 is an abundant number, since it is smaller than the sum of its proper divisors (2532082348).

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

2196979220 is a wasteful number, since it uses less digits than its factorization.

2196979220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4440 (or 4438 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 47.

The square root of 2196979220 is about 46871.9449137754. The cubic root of 2196979220 is about 1299.9959013677.

The spelling of 2196979220 in words is "two billion, one hundred ninety-six million, nine hundred seventy-nine thousand, two hundred twenty".