2538478 has 4 divisors (see below), whose sum is σ = 3807720. Its totient is φ = 1269238.

The previous prime is 2538467. The next prime is 2538479. The reversal of 2538478 is 8748352.

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

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2538479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 634618 + ... + 634621.

It is an arithmetic number, because the mean of its divisors is an integer number (951930).

2^2538478 is an apocalyptic number.

2538478 is a deficient number, since it is larger than the sum of its proper divisors (1269242).

2538478 is a wasteful number, since it uses less digits than its factorization.

2538478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1269241.

The product of its digits is 53760, while the sum is 37.

The square root of 2538478 is about 1593.2601796317. The cubic root of 2538478 is about 136.4136411626.

It can be divided in two parts, 25 and 38478, that added together give a triangular number (38503 = T₂₇₇).

The spelling of 2538478 in words is "two million, five hundred thirty-eight thousand, four hundred seventy-eight".