2164458 has 16 divisors (see below), whose sum is σ = 4374720. Its totient is φ = 713856.

The previous prime is 2164453. The next prime is 2164471. The reversal of 2164458 is 8544612.

It is not an unprimeable number, because it can be changed into a prime (2164453) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1278 + ... + 2441.

It is an arithmetic number, because the mean of its divisors is an integer number (273420).

2^2164458 is an apocalyptic number.

2164458 is an abundant number, since it is smaller than the sum of its proper divisors (2210262).

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

2164458 is a wasteful number, since it uses less digits than its factorization.

2164458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3821.

The product of its digits is 7680, while the sum is 30.

The square root of 2164458 is about 1471.2097063301. The cubic root of 2164458 is about 129.3549505676.

The spelling of 2164458 in words is "two million, one hundred sixty-four thousand, four hundred fifty-eight".