2923856 has 20 divisors (see below), whose sum is σ = 6101172. Its totient is φ = 1349376.

The previous prime is 2923831. The next prime is 2923859. The reversal of 2923856 is 6583292.

It can be written as a sum of positive squares in 2 ways, for example, as 234256 + 2689600 = 484^2 + 1640^2 .

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2923859) 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, 6821 + ... + 7236.

2^2923856 is an apocalyptic number.

2923856 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

2923856 is an abundant number, since it is smaller than the sum of its proper divisors (3177316).

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

2923856 is a wasteful number, since it uses less digits than its factorization.

2923856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14078 (or 14072 counting only the distinct ones).

The product of its digits is 25920, while the sum is 35.

The square root of 2923856 is about 1709.9286534824. The cubic root of 2923856 is about 142.9942782199.

The spelling of 2923856 in words is "two million, nine hundred twenty-three thousand, eight hundred fifty-six".