4138012928 has 72 divisors (see below), whose sum is σ = 9744483840. Its totient is φ = 1716203520.

The previous prime is 4138012913. The next prime is 4138012943. The reversal of 4138012928 is 8292108314.

It is an interprime number because it is at equal distance from previous prime (4138012913) and next prime (4138012943).

It is a junction number, because it is equal to n+sod(n) for n = 4138012891 and 4138012900.

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, 18308 + ... + 92796.

Almost surely, 2^4138012928 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 4138012928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4872241920).

4138012928 is an abundant number, since it is smaller than the sum of its proper divisors (5606470912).

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

4138012928 is an equidigital number, since it uses as much as digits as its factorization.

4138012928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74543 (or 74529 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 38.

The square root of 4138012928 is about 64327.3886303494. The cubic root of 4138012928 is about 1605.4518356640.

The spelling of 4138012928 in words is "four billion, one hundred thirty-eight million, twelve thousand, nine hundred twenty-eight".