2897638 has 4 divisors (see below), whose sum is σ = 4346460. Its totient is φ = 1448818.

The previous prime is 2897627. The next prime is 2897689. The reversal of 2897638 is 8367982.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 2897594 and 2897603.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 724408 + ... + 724411.

It is an arithmetic number, because the mean of its divisors is an integer number (1086615).

2^2897638 is an apocalyptic number.

2897638 is a deficient number, since it is larger than the sum of its proper divisors (1448822).

2897638 is a wasteful number, since it uses less digits than its factorization.

2897638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1448821.

The product of its digits is 145152, while the sum is 43.

The square root of 2897638 is about 1702.2449882435. The cubic root of 2897638 is about 142.5655879464.

The spelling of 2897638 in words is "two million, eight hundred ninety-seven thousand, six hundred thirty-eight".