2157108 has 24 divisors (see below), whose sum is σ = 5298720. Its totient is φ = 681120.

The previous prime is 2157097. The next prime is 2157109. The reversal of 2157108 is 8017512.

It is a super-2 number, since 2×2157108² = 9306229847328, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2157109) 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, 4503 + ... + 4958.

It is an arithmetic number, because the mean of its divisors is an integer number (220780).

2^2157108 is an apocalyptic number.

It is an amenable number.

2157108 is an abundant number, since it is smaller than the sum of its proper divisors (3141612).

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

2157108 is a wasteful number, since it uses less digits than its factorization.

2157108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9487 (or 9485 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 24.

The square root of 2157108 is about 1468.7096377433. The cubic root of 2157108 is about 129.2083646621.

The spelling of 2157108 in words is "two million, one hundred fifty-seven thousand, one hundred eight".