2156396 has 12 divisors (see below), whose sum is σ = 4116840. Its totient is φ = 980160.

The previous prime is 2156393. The next prime is 2156417. The reversal of 2156396 is 6936512.

It is a happy number.

2156396 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a d-powerful number, because it can be written as 2²¹ + 1 + 5³ + 6 + 3³ + 9⁵ + 6² .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2156393) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 24461 + ... + 24548.

It is an arithmetic number, because the mean of its divisors is an integer number (343070).

2^2156396 is an apocalyptic number.

It is an amenable number.

2156396 is a deficient number, since it is larger than the sum of its proper divisors (1960444).

2156396 is a wasteful number, since it uses less digits than its factorization.

2156396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49024 (or 49022 counting only the distinct ones).

The product of its digits is 9720, while the sum is 32.

The square root of 2156396 is about 1468.4672280987. The cubic root of 2156396 is about 129.1941470956.

It can be divided in two parts, 2156 and 396, that multiplied together give a square (853776 = 924²).

The spelling of 2156396 in words is "two million, one hundred fifty-six thousand, three hundred ninety-six".