2107920 has 40 divisors (see below), whose sum is σ = 6535296. Its totient is φ = 562048.

The previous prime is 2107913. The next prime is 2107939. The reversal of 2107920 is 297012.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is an Ulam number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4152 + ... + 4631.

2^2107920 is an apocalyptic number.

2107920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2107920 is an abundant number, since it is smaller than the sum of its proper divisors (4427376).

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

2107920 is a wasteful number, since it uses less digits than its factorization.

2107920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8799 (or 8793 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 21.

The square root of 2107920 is about 1451.8677625734. The cubic root of 2107920 is about 128.2187016330.

The spelling of 2107920 in words is "two million, one hundred seven thousand, nine hundred twenty".