2856144 has 40 divisors (see below), whose sum is σ = 7444960. Its totient is φ = 943488.

The previous prime is 2856121. The next prime is 2856149. The reversal of 2856144 is 4416582.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2856149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7347 + ... + 7725.

It is an arithmetic number, because the mean of its divisors is an integer number (186124).

2^2856144 is an apocalyptic number.

2856144 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2856144 is an abundant number, since it is smaller than the sum of its proper divisors (4588816).

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

2856144 is a wasteful number, since it uses less digits than its factorization.

2856144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 547 (or 541 counting only the distinct ones).

The product of its digits is 7680, while the sum is 30.

The square root of 2856144 is about 1690.0130177013. The cubic root of 2856144 is about 141.8818033830.

The spelling of 2856144 in words is "two million, eight hundred fifty-six thousand, one hundred forty-four".