2197760040 has 512 divisors, whose sum is σ = 8794598400. Its totient is φ = 483729408.

The previous prime is 2197760029. The next prime is 2197760053. The reversal of 2197760040 is 400677912.

It is a happy number.

2197760040 is a `hidden beast` number, since 2 + 1 + 9 + 7 + 7 + 600 + 40 = 666.

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 = 2197759977 and 2197760004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 22657272 + ... + 22657368.

It is an arithmetic number, because the mean of its divisors is an integer number (17176950).

Almost surely, 2^2197760040 is an apocalyptic number.

2197760040 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 2197760040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4397299200).

2197760040 is an abundant number, since it is smaller than the sum of its proper divisors (6596838360).

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

2197760040 is an equidigital number, since it uses as much as digits as its factorization.

2197760040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173 (or 151 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 36.

The square root of 2197760040 is about 46880.2734633662. The cubic root of 2197760040 is about 1300.1498919868.

The spelling of 2197760040 in words is "two billion, one hundred ninety-seven million, seven hundred sixty thousand, forty".