2157846 has 8 divisors (see below), whose sum is σ = 4315704. Its totient is φ = 719280.

The previous prime is 2157839. The next prime is 2157851. The reversal of 2157846 is 6487512.

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

2157846 is an admirable number.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 179815 + ... + 179826.

It is an arithmetic number, because the mean of its divisors is an integer number (539463).

2^2157846 is an apocalyptic number.

2157846 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2157846 is a wasteful number, since it uses less digits than its factorization.

2157846 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359646.

The product of its digits is 13440, while the sum is 33.

The square root of 2157846 is about 1468.9608572048. The cubic root of 2157846 is about 129.2230981078.

It can be divided in two parts, 2157 and 846, that added together give a palindrome (3003).

The spelling of 2157846 in words is "two million, one hundred fifty-seven thousand, eight hundred forty-six".