2847864 has 16 divisors (see below), whose sum is σ = 7119720. Its totient is φ = 949280.

The previous prime is 2847863. The next prime is 2847893. The reversal of 2847864 is 4687482.

It is a super-2 number, since 2×2847864² = 16220658724992, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2847863) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59307 + ... + 59354.

2^2847864 is an apocalyptic number.

2847864 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2847864 is an abundant number, since it is smaller than the sum of its proper divisors (4271856).

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

2847864 is a wasteful number, since it uses less digits than its factorization.

2847864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118670 (or 118666 counting only the distinct ones).

The product of its digits is 86016, while the sum is 39.

The square root of 2847864 is about 1687.5615544329. The cubic root of 2847864 is about 141.7445649245.

The spelling of 2847864 in words is "two million, eight hundred forty-seven thousand, eight hundred sixty-four".