2478894 has 48 divisors (see below), whose sum is σ = 5733504. Its totient is φ = 708400.

The previous prime is 2478877. The next prime is 2478899. The reversal of 2478894 is 4988742.

It is a super-2 number, since 2×2478894² = 12289830926472, which contains 22 as substring.

It is an Ulam number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2478899) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34879 + ... + 34949.

It is an arithmetic number, because the mean of its divisors is an integer number (119448).

2^2478894 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2478894, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2866752).

2478894 is an abundant number, since it is smaller than the sum of its proper divisors (3254610).

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

2478894 is a wasteful number, since it uses less digits than its factorization.

2478894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133 (or 110 counting only the distinct ones).

The product of its digits is 129024, while the sum is 42.

The square root of 2478894 is about 1574.4503802915. The cubic root of 2478894 is about 135.3378642846.

The spelling of 2478894 in words is "two million, four hundred seventy-eight thousand, eight hundred ninety-four".