2104540 has 12 divisors (see below), whose sum is σ = 4419576. Its totient is φ = 841808.

The previous prime is 2104507. The next prime is 2104541. The reversal of 2104540 is 454012.

It is a super-2 number, since 2×2104540² = 8858177223200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2104541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52594 + ... + 52633.

It is an arithmetic number, because the mean of its divisors is an integer number (368298).

2^2104540 is an apocalyptic number.

2104540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2104540 is an abundant number, since it is smaller than the sum of its proper divisors (2315036).

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

2104540 is a wasteful number, since it uses less digits than its factorization.

2104540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105236 (or 105234 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 2104540 is about 1450.7032777243. The cubic root of 2104540 is about 128.1501330826.

Adding to 2104540 its reverse (454012), we get a palindrome (2558552).

The spelling of 2104540 in words is "two million, one hundred four thousand, five hundred forty".