2678442 has 32 divisors (see below), whose sum is σ = 6023808. Its totient is φ = 787776.

The previous prime is 2678441. The next prime is 2678447. The reversal of 2678442 is 2448762.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2678441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1048 + ... + 2540.

It is an arithmetic number, because the mean of its divisors is an integer number (188244).

2^2678442 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2678442, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3011904).

2678442 is an abundant number, since it is smaller than the sum of its proper divisors (3345366).

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

2678442 is a wasteful number, since it uses less digits than its factorization.

2678442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1534.

The product of its digits is 21504, while the sum is 33.

The square root of 2678442 is about 1636.5946352106. The cubic root of 2678442 is about 138.8760691693.

The spelling of 2678442 in words is "two million, six hundred seventy-eight thousand, four hundred forty-two".