2785940 has 12 divisors (see below), whose sum is σ = 5850516. Its totient is φ = 1114368.

The previous prime is 2785907. The next prime is 2785961. The reversal of 2785940 is 495872.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1860496 + 925444 = 1364^2 + 962^2 .

It is a super-2 number, since 2×2785940² = 15522923367200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2785940.

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, 69629 + ... + 69668.

It is an arithmetic number, because the mean of its divisors is an integer number (487543).

2^2785940 is an apocalyptic number.

2785940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2785940 is an abundant number, since it is smaller than the sum of its proper divisors (3064576).

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

2785940 is a wasteful number, since it uses less digits than its factorization.

2785940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139306 (or 139304 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 2785940 is about 1669.1135371807. The cubic root of 2785940 is about 140.7096619417.

The spelling of 2785940 in words is "two million, seven hundred eighty-five thousand, nine hundred forty".