2158104 has 32 divisors (see below), whose sum is σ = 5811120. Its totient is φ = 663936.

The previous prime is 2158103. The next prime is 2158129. The reversal of 2158104 is 4018512.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2158103) 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, 3147 + ... + 3770.

2^2158104 is an apocalyptic number.

2158104 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2158104 is an abundant number, since it is smaller than the sum of its proper divisors (3653016).

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

2158104 is a wasteful number, since it uses less digits than its factorization.

2158104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6939 (or 6935 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 21.

The square root of 2158104 is about 1469.0486717601. The cubic root of 2158104 is about 129.2282480321.

The spelling of 2158104 in words is "two million, one hundred fifty-eight thousand, one hundred four".