2840940 has 48 divisors (see below), whose sum is σ = 8840160. Its totient is φ = 757440.

The previous prime is 2840939. The next prime is 2840951. The reversal of 2840940 is 490482.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2091 + ... + 3170.

It is an arithmetic number, because the mean of its divisors is an integer number (184170).

2^2840940 is an apocalyptic number.

2840940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2840940 is an abundant number, since it is smaller than the sum of its proper divisors (5999220).

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

2840940 is a wasteful number, since it uses less digits than its factorization.

2840940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5279 (or 5271 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 2840940 is about 1685.5088252513. The cubic root of 2840940 is about 141.6295973753.

The spelling of 2840940 in words is "two million, eight hundred forty thousand, nine hundred forty".