2156086 has 4 divisors (see below), whose sum is σ = 3234132. Its totient is φ = 1078042.

The previous prime is 2156083. The next prime is 2156087. The reversal of 2156086 is 6806512.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2156083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 539020 + ... + 539023.

It is an arithmetic number, because the mean of its divisors is an integer number (808533).

2^2156086 is an apocalyptic number.

2156086 is a deficient number, since it is larger than the sum of its proper divisors (1078046).

2156086 is a wasteful number, since it uses less digits than its factorization.

2156086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1078045.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 2156086 is about 1468.3616720686. The cubic root of 2156086 is about 129.1879558851.

The spelling of 2156086 in words is "two million, one hundred fifty-six thousand, eighty-six".