2897784 has 48 divisors (see below), whose sum is σ = 7927920. Its totient is φ = 956160.

The previous prime is 2897753. The next prime is 2897789. The reversal of 2897784 is 4877982.

It is a super-2 number, since 2×2897784² = 16794304221312, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2897789) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11904 + ... + 12144.

It is an arithmetic number, because the mean of its divisors is an integer number (165165).

2^2897784 is an apocalyptic number.

2897784 is a gapful number since it is divisible by the number (24) 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 2897784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3963960).

2897784 is an abundant number, since it is smaller than the sum of its proper divisors (5030136).

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

2897784 is a wasteful number, since it uses less digits than its factorization.

2897784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420 (or 413 counting only the distinct ones).

The product of its digits is 225792, while the sum is 45.

The square root of 2897784 is about 1702.2878722472. The cubic root of 2897784 is about 142.5679823364.

The spelling of 2897784 in words is "two million, eight hundred ninety-seven thousand, seven hundred eighty-four".