2681478 has 64 divisors (see below), whose sum is σ = 6635520. Its totient is φ = 798336.

The previous prime is 2681477. The next prime is 2681507. The reversal of 2681478 is 8741862.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2681473) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21051 + ... + 21177.

It is an arithmetic number, because the mean of its divisors is an integer number (103680).

2^2681478 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2681478, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3317760).

2681478 is an abundant number, since it is smaller than the sum of its proper divisors (3954042).

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

2681478 is a wasteful number, since it uses less digits than its factorization.

2681478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178 (or 172 counting only the distinct ones).

The product of its digits is 21504, while the sum is 36.

The square root of 2681478 is about 1637.5219082504. The cubic root of 2681478 is about 138.9285211224.

The spelling of 2681478 in words is "two million, six hundred eighty-one thousand, four hundred seventy-eight".