2897403840 has 672 divisors, whose sum is σ = 11503005696. Its totient is φ = 665026560.

The previous prime is 2897403829. The next prime is 2897403893. The reversal of 2897403840 is 483047982.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

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 95 ways as a sum of consecutive naturals, for example, 34908439 + ... + 34908521.

It is an arithmetic number, because the mean of its divisors is an integer number (17117568).

Almost surely, 2^2897403840 is an apocalyptic number.

2897403840 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 2897403840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5751502848).

2897403840 is an abundant number, since it is smaller than the sum of its proper divisors (8605601856).

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

2897403840 is a wasteful number, since it uses less digits than its factorization.

2897403840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177 (or 164 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The square root of 2897403840 is about 53827.5379336637. The cubic root of 2897403840 is about 1425.6174757047.

The spelling of 2897403840 in words is "two billion, eight hundred ninety-seven million, four hundred three thousand, eight hundred forty".