2156346 has 12 divisors (see below), whose sum is σ = 4672122. Its totient is φ = 718776.

The previous prime is 2156339. The next prime is 2156351. The reversal of 2156346 is 6436512.

2156346 is a `hidden beast` number, since 21 + 5 + 634 + 6 = 666.

2156346 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 1134225 + 1022121 = 1065^2 + 1011^2 .

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 5 ways as a sum of consecutive naturals, for example, 59881 + ... + 59916.

2^2156346 is an apocalyptic number.

2156346 is an abundant number, since it is smaller than the sum of its proper divisors (2515776).

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

2156346 is a wasteful number, since it uses less digits than its factorization.

2156346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119805 (or 119802 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 2156346 is about 1468.4502034458. The cubic root of 2156346 is about 129.1931485534.

It can be divided in two parts, 21563 and 46, that added together give a square (21609 = 147²).

The spelling of 2156346 in words is "two million, one hundred fifty-six thousand, three hundred forty-six".