2786340 has 24 divisors (see below), whose sum is σ = 7801920. Its totient is φ = 743008.

The previous prime is 2786339. The next prime is 2786347. The reversal of 2786340 is 436872.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 2786298 and 2786307.

It is not an unprimeable number, because it can be changed into a prime (2786347) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 23160 + ... + 23279.

It is an arithmetic number, because the mean of its divisors is an integer number (325080).

2^2786340 is an apocalyptic number.

2786340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2786340 is an abundant number, since it is smaller than the sum of its proper divisors (5015580).

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

2786340 is a wasteful number, since it uses less digits than its factorization.

2786340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46451 (or 46449 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 2786340 is about 1669.2333569636. The cubic root of 2786340 is about 140.7163958952.

The spelling of 2786340 in words is "two million, seven hundred eighty-six thousand, three hundred forty".