1988028936 has 96 divisors (see below), whose sum is σ = 5519404800. Its totient is φ = 646149120.

The previous prime is 1988028923. The next prime is 1988028947. The reversal of 1988028936 is 6398208891.

It is a happy number.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1051480 + ... + 1053368.

It is an arithmetic number, because the mean of its divisors is an integer number (57493800).

Almost surely, 2^1988028936 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 1988028936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2759702400).

1988028936 is an abundant number, since it is smaller than the sum of its proper divisors (3531375864).

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

1988028936 is a wasteful number, since it uses less digits than its factorization.

1988028936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2259 (or 2252 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 54.

The square root of 1988028936 is about 44587.3181072825. The cubic root of 1988028936 is about 1257.4022518210.

The spelling of 1988028936 in words is "one billion, nine hundred eighty-eight million, twenty-eight thousand, nine hundred thirty-six".