2197939800 has 384 divisors, whose sum is σ = 8280898560. Its totient is φ = 471398400.

The previous prime is 2197939789. The next prime is 2197939801. The reversal of 2197939800 is 89397912.

It is a self number, because there is not a number n which added to its sum of digits gives 2197939800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2197939801) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 5892414 + ... + 5892786.

It is an arithmetic number, because the mean of its divisors is an integer number (21564840).

Almost surely, 2^2197939800 is an apocalyptic number.

2197939800 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 2197939800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4140449280).

2197939800 is an abundant number, since it is smaller than the sum of its proper divisors (6082958760).

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

2197939800 is a wasteful number, since it uses less digits than its factorization.

2197939800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 483 (or 474 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 48.

The square root of 2197939800 is about 46882.1906484755. The cubic root of 2197939800 is about 1300.1853384669.

The spelling of 2197939800 in words is "two billion, one hundred ninety-seven million, nine hundred thirty-nine thousand, eight hundred".