2857140 has 192 divisors, whose sum is σ = 10725120. Its totient is φ = 622080.

The previous prime is 2857123. The next prime is 2857159. The reversal of 2857140 is 417582.

2857140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 77202 + ... + 77238.

It is an arithmetic number, because the mean of its divisors is an integer number (55860).

2^2857140 is an apocalyptic number.

2857140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2857140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5362560).

2857140 is an abundant number, since it is smaller than the sum of its proper divisors (7867980).

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

2857140 is a wasteful number, since it uses less digits than its factorization.

2857140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79 (or 71 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 2857140 is about 1690.3076643026. The cubic root of 2857140 is about 141.8982938976.

The spelling of 2857140 in words is "two million, eight hundred fifty-seven thousand, one hundred forty".