1238596128 has 432 divisors, whose sum is σ = 4571199360. Its totient is φ = 314496000.

The previous prime is 1238596063. The next prime is 1238596141. The reversal of 1238596128 is 8216958321.

1238596128 is a `hidden beast` number, since 1 + 2 + 38 + 596 + 1 + 28 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 12263278 + ... + 12263378.

It is an arithmetic number, because the mean of its divisors is an integer number (10581480).

Almost surely, 2^1238596128 is an apocalyptic number.

1238596128 is a gapful number since it is divisible by the number (18) 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 1238596128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2285599680).

1238596128 is an abundant number, since it is smaller than the sum of its proper divisors (3332603232).

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

1238596128 is a wasteful number, since it uses less digits than its factorization.

1238596128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221 (or 203 counting only the distinct ones).

The product of its digits is 207360, while the sum is 45.

The square root of 1238596128 is about 35193.6944352252. The cubic root of 1238596128 is about 1073.9314792484.

The spelling of 1238596128 in words is "one billion, two hundred thirty-eight million, five hundred ninety-six thousand, one hundred twenty-eight".