2651808 has 48 divisors (see below), whose sum is σ = 7269696. Its totient is φ = 844800.

The previous prime is 2651807. The next prime is 2651819. The reversal of 2651808 is 8081562.

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (2651807) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1608 + ... + 2808.

It is an arithmetic number, because the mean of its divisors is an integer number (151452).

2^2651808 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2651808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3634848).

2651808 is an abundant number, since it is smaller than the sum of its proper divisors (4617888).

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

2651808 is a wasteful number, since it uses less digits than its factorization.

2651808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1237 (or 1229 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 30.

The square root of 2651808 is about 1628.4372877087. The cubic root of 2651808 is about 138.4142144065.

The spelling of 2651808 in words is "two million, six hundred fifty-one thousand, eight hundred eight".