2945808 has 50 divisors (see below), whose sum is σ = 8529774. Its totient is φ = 981504.

The previous prime is 2945807. The next prime is 2945851. The reversal of 2945808 is 8085492.

It can be written as a sum of positive squares in only one way, i.e., 2862864 + 82944 = 1692^2 + 288^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2945807) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 160 + ... + 2432.

2^2945808 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 2945808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4264887).

2945808 is an abundant number, since it is smaller than the sum of its proper divisors (5583966).

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

2945808 is a wasteful number, since it uses less digits than its factorization.

2945808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2293 (or 2278 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 2945808 is about 1716.3356315127. The cubic root of 2945808 is about 143.3512482866.

The spelling of 2945808 in words is "two million, nine hundred forty-five thousand, eight hundred eight".