2808380 has 12 divisors (see below), whose sum is σ = 5897640. Its totient is φ = 1123344.

The previous prime is 2808361. The next prime is 2808397. The reversal of 2808380 is 838082.

It is an Ulam number.

It is a congruent number.

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, 70190 + ... + 70229.

It is an arithmetic number, because the mean of its divisors is an integer number (491470).

2^2808380 is an apocalyptic number.

2808380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2808380 is an abundant number, since it is smaller than the sum of its proper divisors (3089260).

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

2808380 is a wasteful number, since it uses less digits than its factorization.

2808380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140428 (or 140426 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 29.

The square root of 2808380 is about 1675.8221862716. The cubic root of 2808380 is about 141.0864449875.

The spelling of 2808380 in words is "two million, eight hundred eight thousand, three hundred eighty".