2628478 has 4 divisors (see below), whose sum is σ = 3942720. Its totient is φ = 1314238.

The previous prime is 2628407. The next prime is 2628481. The reversal of 2628478 is 8748262.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 657118 + ... + 657121.

It is an arithmetic number, because the mean of its divisors is an integer number (985680).

2^2628478 is an apocalyptic number.

2628478 is a deficient number, since it is larger than the sum of its proper divisors (1314242).

2628478 is a wasteful number, since it uses less digits than its factorization.

2628478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1314241.

The product of its digits is 43008, while the sum is 37.

The square root of 2628478 is about 1621.2581534105. The cubic root of 2628478 is about 138.0071059843.

It can be divided in two parts, 26284 and 78, that added together give a palindrome (26362).

The spelling of 2628478 in words is "two million, six hundred twenty-eight thousand, four hundred seventy-eight".