2087940 has 96 divisors (see below), whose sum is σ = 6531840. Its totient is φ = 495616.

The previous prime is 2087927. The next prime is 2087941. The reversal of 2087940 is 497802.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 2087898 and 2087907.

It is not an unprimeable number, because it can be changed into a prime (2087941) 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 31 ways as a sum of consecutive naturals, for example, 23416 + ... + 23504.

It is an arithmetic number, because the mean of its divisors is an integer number (68040).

2^2087940 is an apocalyptic number.

2087940 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 2087940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3265920).

2087940 is an abundant number, since it is smaller than the sum of its proper divisors (4443900).

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

2087940 is a wasteful number, since it uses less digits than its factorization.

2087940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141 (or 139 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 2087940 is about 1444.9705879360. The cubic root of 2087940 is about 127.8123062887.

The spelling of 2087940 in words is "two million, eighty-seven thousand, nine hundred forty".