2197449240 has 256 divisors, whose sum is σ = 8194867200. Its totient is φ = 459841536.

The previous prime is 2197449217. The next prime is 2197449259. The reversal of 2197449240 is 429447912.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 2197449192 and 2197449201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 526281 + ... + 530439.

It is an arithmetic number, because the mean of its divisors is an integer number (32011200).

Almost surely, 2^2197449240 is an apocalyptic number.

2197449240 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 2197449240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4097433600).

2197449240 is an abundant number, since it is smaller than the sum of its proper divisors (5997417960).

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

2197449240 is a wasteful number, since it uses less digits than its factorization.

2197449240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4234 (or 4230 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 42.

The square root of 2197449240 is about 46876.9585190848. The cubic root of 2197449240 is about 1300.0886014563.

The spelling of 2197449240 in words is "two billion, one hundred ninety-seven million, four hundred forty-nine thousand, two hundred forty".