2807406 has 48 divisors (see below), whose sum is σ = 7264080. Its totient is φ = 801360.

The previous prime is 2807381. The next prime is 2807407. The reversal of 2807406 is 6047082.

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

It is a self number, because there is not a number n which added to its sum of digits gives 2807406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2807407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2116 + ... + 3176.

It is an arithmetic number, because the mean of its divisors is an integer number (151335).

2^2807406 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2807406, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3632040).

2807406 is an abundant number, since it is smaller than the sum of its proper divisors (4456674).

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

2807406 is a wasteful number, since it uses less digits than its factorization.

2807406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1086 (or 1073 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 2807406 is about 1675.5315574468. The cubic root of 2807406 is about 141.0701326073.

The spelling of 2807406 in words is "two million, eight hundred seven thousand, four hundred six".