5238778428 has 144 divisors (see below), whose sum is σ = 15033301920. Its totient is φ = 1526773248.

The previous prime is 5238778427. The next prime is 5238778469. The reversal of 5238778428 is 8248778325.

5238778428 is a `hidden beast` number, since 523 + 8 + 7 + 78 + 42 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5238778427) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 715675 + ... + 722957.

It is an arithmetic number, because the mean of its divisors is an integer number (104397930).

Almost surely, 2^5238778428 is an apocalyptic number.

5238778428 is a gapful number since it is divisible by the number (58) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5238778428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7516650960).

5238778428 is an abundant number, since it is smaller than the sum of its proper divisors (9794523492).

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

5238778428 is a wasteful number, since it uses less digits than its factorization.

5238778428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7388 (or 7383 counting only the distinct ones).

The product of its digits is 6021120, while the sum is 54.

The square root of 5238778428 is about 72379.4061042228. The cubic root of 5238778428 is about 1736.7741380722.

The spelling of 5238778428 in words is "five billion, two hundred thirty-eight million, seven hundred seventy-eight thousand, four hundred twenty-eight".