2196724140 has 144 divisors (see below), whose sum is σ = 7553800800. Its totient is φ = 512262144.

The previous prime is 2196724133. The next prime is 2196724237. The reversal of 2196724140 is 414276912.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 2196724095 and 2196724104.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 19756 + ... + 69164.

It is an arithmetic number, because the mean of its divisors is an integer number (52456950).

Almost surely, 2^2196724140 is an apocalyptic number.

2196724140 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 2196724140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3776900400).

2196724140 is an abundant number, since it is smaller than the sum of its proper divisors (5357076660).

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

2196724140 is a wasteful number, since it uses less digits than its factorization.

2196724140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49456 (or 49451 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 2196724140 is about 46869.2238041127. The cubic root of 2196724140 is about 1299.9455874661.

The spelling of 2196724140 in words is "two billion, one hundred ninety-six million, seven hundred twenty-four thousand, one hundred forty".