5138428 has 12 divisors (see below), whose sum is σ = 9145080. Its totient is φ = 2525552.

The previous prime is 5138387. The next prime is 5138443. The reversal of 5138428 is 8248315.

It is a super-2 number, since 2×5138428² = 52806884622368, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 5138428.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10651 + ... + 11122.

It is an arithmetic number, because the mean of its divisors is an integer number (762090).

Almost surely, 2^5138428 is an apocalyptic number.

It is an amenable number.

5138428 is a deficient number, since it is larger than the sum of its proper divisors (4006652).

5138428 is a wasteful number, since it uses less digits than its factorization.

5138428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21836 (or 21834 counting only the distinct ones).

The product of its digits is 7680, while the sum is 31.

The square root of 5138428 is about 2266.8100935014. The cubic root of 5138428 is about 172.5613084604.

The spelling of 5138428 in words is "five million, one hundred thirty-eight thousand, four hundred twenty-eight".