2117258 has 24 divisors (see below), whose sum is σ = 3764964. Its totient is φ = 887040.

The previous prime is 2117239. The next prime is 2117273. The reversal of 2117258 is 8527112.

It can be written as a sum of positive squares in 2 ways, for example, as 1951609 + 165649 = 1397^2 + 407^2 .

It is a Smith number, since the sum of its digits (26) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2810 + ... + 3482.

2^2117258 is an apocalyptic number.

2117258 is a deficient number, since it is larger than the sum of its proper divisors (1647706).

2117258 is a wasteful number, since it uses less digits than its factorization.

2117258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 710 (or 699 counting only the distinct ones).

The product of its digits is 1120, while the sum is 26.

The square root of 2117258 is about 1455.0800665256. The cubic root of 2117258 is about 128.4077572847.

The spelling of 2117258 in words is "two million, one hundred seventeen thousand, two hundred fifty-eight".