2108587940 has 24 divisors (see below), whose sum is σ = 4473688632. Its totient is φ = 834739200.

The previous prime is 2108587939. The next prime is 2108587967. The reversal of 2108587940 is 497858012.

It can be written as a sum of positive squares in 4 ways, for example, as 503463844 + 1605124096 = 22438^2 + 40064^2 .

It is a super-2 number, since 2×2108587940² = 8892286201426887200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2108587891 and 2108587900.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 541511 + ... + 545390.

It is an arithmetic number, because the mean of its divisors is an integer number (186403693).

Almost surely, 2^2108587940 is an apocalyptic number.

2108587940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2108587940 is an abundant number, since it is smaller than the sum of its proper divisors (2365100692).

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

2108587940 is a wasteful number, since it uses less digits than its factorization.

2108587940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1087007 (or 1087005 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 44.

The square root of 2108587940 is about 45919.3634537762. The cubic root of 2108587940 is about 1282.3224315816.

The spelling of 2108587940 in words is "two billion, one hundred eight million, five hundred eighty-seven thousand, nine hundred forty".