2897881 has 16 divisors (see below), whose sum is σ = 3452544. Its totient is φ = 2381184.

The previous prime is 2897833. The next prime is 2897887. The reversal of 2897881 is 1887982.

It is not a de Polignac number, because 2897881 - 2⁷ = 2897753 is a prime.

It is a super-2 number, since 2×2897881² = 16795428580322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2897887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27030 + ... + 27136.

It is an arithmetic number, because the mean of its divisors is an integer number (215784).

2^2897881 is an apocalyptic number.

It is an amenable number.

2897881 is a deficient number, since it is larger than the sum of its proper divisors (554663).

2897881 is a wasteful number, since it uses less digits than its factorization.

2897881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240.

The product of its digits is 64512, while the sum is 43.

The square root of 2897881 is about 1702.3163630771. The cubic root of 2897881 is about 142.5695730852.

The spelling of 2897881 in words is "two million, eight hundred ninety-seven thousand, eight hundred eighty-one".