2089540 has 24 divisors (see below), whose sum is σ = 4419072. Its totient is φ = 829920.

The previous prime is 2089523. The next prime is 2089541. The reversal of 2089540 is 459802.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2089499 and 2089508.

It is not an unprimeable number, because it can be changed into a prime (2089541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3547 + ... + 4093.

It is an arithmetic number, because the mean of its divisors is an integer number (184128).

2^2089540 is an apocalyptic number.

2089540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2089540 is an abundant number, since it is smaller than the sum of its proper divisors (2329532).

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

2089540 is a wasteful number, since it uses less digits than its factorization.

2089540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 747 (or 745 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 2089540 is about 1445.5241263984. The cubic root of 2089540 is about 127.8449457126.

The spelling of 2089540 in words is "two million, eighty-nine thousand, five hundred forty".