2196997800 has 96 divisors (see below), whose sum is σ = 6835797600. Its totient is φ = 583706880.

The previous prime is 2196997793. The next prime is 2196997837. The reversal of 2196997800 is 87996912.

It is a happy number.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors.

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, 159591 + ... + 172809.

It is an arithmetic number, because the mean of its divisors is an integer number (71206225).

Almost surely, 2^2196997800 is an apocalyptic number.

2196997800 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 2196997800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3417898800).

2196997800 is an abundant number, since it is smaller than the sum of its proper divisors (4638799800).

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

2196997800 is a wasteful number, since it uses less digits than its factorization.

2196997800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13515 (or 13506 counting only the distinct ones).

The product of its (nonzero) digits is 489888, while the sum is 51.

The square root of 2196997800 is about 46872.1431129408. The cubic root of 2196997800 is about 1299.9995660748. Note that the first 3 decimals are identical.

The spelling of 2196997800 in words is "two billion, one hundred ninety-six million, nine hundred ninety-seven thousand, eight hundred".