8238861428 has 48 divisors (see below), whose sum is σ = 16941657600. Its totient is φ = 3432539136.

The previous prime is 8238861403. The next prime is 8238861431. The reversal of 8238861428 is 8241688328.

It is a happy number.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors.

It is a nialpdrome in base 7.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 175076 + ... + 217092.

It is an arithmetic number, because the mean of its divisors is an integer number (352951200).

Almost surely, 2^8238861428 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8238861428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8470828800).

8238861428 is an abundant number, since it is smaller than the sum of its proper divisors (8702796172).

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

8238861428 is a wasteful number, since it uses less digits than its factorization.

8238861428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42224 (or 42222 counting only the distinct ones).

The product of its digits is 1179648, while the sum is 50.

The square root of 8238861428 is about 90768.1740920241. The cubic root of 8238861428 is about 2019.7102342255.

The spelling of 8238861428 in words is "eight billion, two hundred thirty-eight million, eight hundred sixty-one thousand, four hundred twenty-eight".