5138778 has 16 divisors (see below), whose sum is σ = 10818720. Its totient is φ = 1622736.

The previous prime is 5138753. The next prime is 5138789. The reversal of 5138778 is 8778315.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22425 + ... + 22652.

It is an arithmetic number, because the mean of its divisors is an integer number (676170).

Almost surely, 2^5138778 is an apocalyptic number.

5138778 is an abundant number, since it is smaller than the sum of its proper divisors (5679942).

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

5138778 is a wasteful number, since it uses less digits than its factorization.

5138778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45101.

The product of its digits is 47040, while the sum is 39.

The square root of 5138778 is about 2266.8872931842. The cubic root of 5138778 is about 172.5652263310.

The spelling of 5138778 in words is "five million, one hundred thirty-eight thousand, seven hundred seventy-eight".