2651920 has 20 divisors (see below), whose sum is σ = 6165900. Its totient is φ = 1060736.

The previous prime is 2651911. The next prime is 2651947. The reversal of 2651920 is 291562.

It can be written as a sum of positive squares in 2 ways, for example, as 2062096 + 589824 = 1436^2 + 768^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16495 + ... + 16654.

It is an arithmetic number, because the mean of its divisors is an integer number (308295).

2^2651920 is an apocalyptic number.

2651920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2651920 is an abundant number, since it is smaller than the sum of its proper divisors (3513980).

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

2651920 is a wasteful number, since it uses less digits than its factorization.

2651920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33162 (or 33156 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 2651920 is about 1628.4716761430. The cubic root of 2651920 is about 138.4161630360.

The spelling of 2651920 in words is "two million, six hundred fifty-one thousand, nine hundred twenty".