2857438 has 8 divisors (see below), whose sum is σ = 4300632. Its totient is φ = 1423896.

The previous prime is 2857433. The next prime is 2857453. The reversal of 2857438 is 8347582.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 2857397 and 2857406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2857433) 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, 1620 + ... + 2887.

It is an arithmetic number, because the mean of its divisors is an integer number (537579).

2^2857438 is an apocalyptic number.

2857438 is a deficient number, since it is larger than the sum of its proper divisors (1443194).

2857438 is a wasteful number, since it uses less digits than its factorization.

2857438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4826.

The product of its digits is 53760, while the sum is 37.

The square root of 2857438 is about 1690.3958116370. The cubic root of 2857438 is about 141.9032270617.

The spelling of 2857438 in words is "two million, eight hundred fifty-seven thousand, four hundred thirty-eight".