2159040 has 112 divisors (see below), whose sum is σ = 7424928. Its totient is φ = 528384.

The previous prime is 2159023. The next prime is 2159041. The reversal of 2159040 is 409512.

It is a super-2 number, since 2×2159040² = 9322907443200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2158998 and 2159016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2159041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12394 + ... + 12566.

It is an arithmetic number, because the mean of its divisors is an integer number (66294).

2^2159040 is an apocalyptic number.

2159040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2159040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3712464).

2159040 is an abundant number, since it is smaller than the sum of its proper divisors (5265888).

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

2159040 is a wasteful number, since it uses less digits than its factorization.

2159040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206 (or 196 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 2159040 is about 1469.3672107407. The cubic root of 2159040 is about 129.2469280335.

The spelling of 2159040 in words is "two million, one hundred fifty-nine thousand, forty".