2160540 has 48 divisors (see below), whose sum is σ = 6723360. Its totient is φ = 576000.

The previous prime is 2160533. The next prime is 2160553. The reversal of 2160540 is 450612.

It is a happy number.

2160540 is a `hidden beast` number, since 21 + 605 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1461 + ... + 2540.

It is an arithmetic number, because the mean of its divisors is an integer number (140070).

2^2160540 is an apocalyptic number.

2160540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2160540 is an abundant number, since it is smaller than the sum of its proper divisors (4562820).

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

2160540 is a wasteful number, since it uses less digits than its factorization.

2160540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4019 (or 4011 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 2160540 is about 1469.8775459201. The cubic root of 2160540 is about 129.2768526778.

It can be divided in two parts, 2160 and 540, that multiplied together give a square (1166400 = 1080²).

The spelling of 2160540 in words is "two million, one hundred sixty thousand, five hundred forty".