6138428 has 12 divisors (see below), whose sum is σ = 11374272. Its totient is φ = 2888640.

The previous prime is 6138427. The next prime is 6138437. The reversal of 6138428 is 8248316.

It is a super-2 number, since 2×6138428² = 75360596622368, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6138394 and 6138403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6138427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45068 + ... + 45203.

It is an arithmetic number, because the mean of its divisors is an integer number (947856).

Almost surely, 2^6138428 is an apocalyptic number.

6138428 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

6138428 is a deficient number, since it is larger than the sum of its proper divisors (5235844).

6138428 is a wasteful number, since it uses less digits than its factorization.

6138428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90292 (or 90290 counting only the distinct ones).

The product of its digits is 9216, while the sum is 32.

The square root of 6138428 is about 2477.5851145823. The cubic root of 6138428 is about 183.0988944604.

The spelling of 6138428 in words is "six million, one hundred thirty-eight thousand, four hundred twenty-eight".