2106187404 has 24 divisors (see below), whose sum is σ = 4919288640. Its totient is φ = 701369424.

The previous prime is 2106187327. The next prime is 2106187427. The reversal of 2106187404 is 4047816012.

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, 73894 + ... + 98349.

It is an arithmetic number, because the mean of its divisors is an integer number (204970360).

Almost surely, 2^2106187404 is an apocalyptic number.

It is an amenable number.

2106187404 is an abundant number, since it is smaller than the sum of its proper divisors (2813101236).

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

2106187404 is a wasteful number, since it uses less digits than its factorization.

2106187404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173269 (or 173267 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 33.

The square root of 2106187404 is about 45893.2174073686. The cubic root of 2106187404 is about 1281.8356239575.

The spelling of 2106187404 in words is "two billion, one hundred six million, one hundred eighty-seven thousand, four hundred four".