2957856 has 48 divisors (see below), whose sum is σ = 8473248. Its totient is φ = 896000.

The previous prime is 2957833. The next prime is 2957861. The reversal of 2957856 is 6587592.

It is a tau number, because it is divible by the number of its divisors (48).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 345 + ... + 2456.

It is an arithmetic number, because the mean of its divisors is an integer number (176526).

2^2957856 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2957856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4236624).

2957856 is an abundant number, since it is smaller than the sum of its proper divisors (5515392).

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

2957856 is a wasteful number, since it uses less digits than its factorization.

2957856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2825 (or 2817 counting only the distinct ones).

The product of its digits is 151200, while the sum is 42.

The square root of 2957856 is about 1719.8418531946. The cubic root of 2957856 is about 143.5464122435.

The spelling of 2957856 in words is "two million, nine hundred fifty-seven thousand, eight hundred fifty-six".