2897117982 has 128 divisors (see below), whose sum is σ = 7261125120. Its totient is φ = 848517120.

The previous prime is 2897117969. The next prime is 2897117999.

2897117982 is nontrivially palindromic in base 10.

2897117982 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (54).

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, 4241413 + ... + 4242095.

It is an arithmetic number, because the mean of its divisors is an integer number (56727540).

Almost surely, 2^2897117982 is an apocalyptic number.

2897117982 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 2897117982, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3630562560).

2897117982 is an abundant number, since it is smaller than the sum of its proper divisors (4364007138).

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

2897117982 is a wasteful number, since it uses less digits than its factorization.

2897117982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 935 (or 929 counting only the distinct ones).

The product of its digits is 1016064, while the sum is 54.

The square root of 2897117982 is about 53824.8825544469. The cubic root of 2897117982 is about 1425.5705903336.

The spelling of 2897117982 in words is "two billion, eight hundred ninety-seven million, one hundred seventeen thousand, nine hundred eighty-two".