5138978 has 16 divisors (see below), whose sum is σ = 8346240. Its totient is φ = 2359056.

The previous prime is 5138977. The next prime is 5139019. The reversal of 5138978 is 8798315.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (5138977) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5801 + ... + 6627.

It is an arithmetic number, because the mean of its divisors is an integer number (521640).

Almost surely, 2^5138978 is an apocalyptic number.

5138978 is a deficient number, since it is larger than the sum of its proper divisors (3207262).

5138978 is a wasteful number, since it uses less digits than its factorization.

5138978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1081.

The product of its digits is 60480, while the sum is 41.

The square root of 5138978 is about 2266.9314061083. The cubic root of 5138978 is about 172.5674650342.

It can be divided in two parts, 5138 and 978, that added together give a palindrome (6116).

The spelling of 5138978 in words is "five million, one hundred thirty-eight thousand, nine hundred seventy-eight".