2157346 has 4 divisors (see below), whose sum is σ = 3236022. Its totient is φ = 1078672.

The previous prime is 2157343. The next prime is 2157361. The reversal of 2157346 is 6437512.

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

It can be written as a sum of positive squares in only one way, i.e., 1918225 + 239121 = 1385^2 + 489^2 .

It is a d-powerful number, because it can be written as 2⁹ + 1 + 5⁹ + 7⁴ + 3¹¹ + 4⁷ + 6⁵ .

It is not an unprimeable number, because it can be changed into a prime (2157341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 539335 + ... + 539338.

2^2157346 is an apocalyptic number.

2157346 is a deficient number, since it is larger than the sum of its proper divisors (1078676).

2157346 is a wasteful number, since it uses less digits than its factorization.

2157346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1078675.

The product of its digits is 5040, while the sum is 28.

The square root of 2157346 is about 1468.7906590117. The cubic root of 2157346 is about 129.2131164656.

The spelling of 2157346 in words is "two million, one hundred fifty-seven thousand, three hundred forty-six".