1996237128 has 128 divisors (see below), whose sum is σ = 5373849600. Its totient is φ = 616087296.

The previous prime is 1996237123. The next prime is 1996237163. The reversal of 1996237128 is 8217326991.

1996237128 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (1996237123) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6812950 + ... + 6813242.

It is an arithmetic number, because the mean of its divisors is an integer number (41983200).

Almost surely, 2^1996237128 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 1996237128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2686924800).

1996237128 is an abundant number, since it is smaller than the sum of its proper divisors (3377612472).

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

1996237128 is a wasteful number, since it uses less digits than its factorization.

1996237128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 611 (or 607 counting only the distinct ones).

The product of its digits is 326592, while the sum is 48.

The square root of 1996237128 is about 44679.2695553542. The cubic root of 1996237128 is about 1259.1304002283.

The spelling of 1996237128 in words is "one billion, nine hundred ninety-six million, two hundred thirty-seven thousand, one hundred twenty-eight".