2908240 has 20 divisors (see below), whose sum is σ = 6761844. Its totient is φ = 1163264.

The previous prime is 2908183. The next prime is 2908261. The reversal of 2908240 is 428092.

It can be written as a sum of positive squares in 2 ways, for example, as 937024 + 1971216 = 968^2 + 1404^2 .

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18097 + ... + 18256.

2^2908240 is an apocalyptic number.

2908240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2908240 is an abundant number, since it is smaller than the sum of its proper divisors (3853604).

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

2908240 is a wasteful number, since it uses less digits than its factorization.

2908240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36366 (or 36360 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 2908240 is about 1705.3562677634. The cubic root of 2908240 is about 142.7392513093.

The spelling of 2908240 in words is "two million, nine hundred eight thousand, two hundred forty".