1988028000 has 720 divisors, whose sum is σ = 8588807136. Its totient is φ = 434649600.

The previous prime is 1988027999. The next prime is 1988028013. The reversal of 1988028000 is 8208891.

It is a tau number, because it is divible by the number of its divisors (720).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 86435989 + ... + 86436011.

Almost surely, 2^1988028000 is an apocalyptic number.

1988028000 is a gapful number since it is divisible by the number (10) 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 1988028000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4294403568).

1988028000 is an abundant number, since it is smaller than the sum of its proper divisors (6600779136).

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

1988028000 is an equidigital number, since it uses as much as digits as its factorization.

1988028000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82 (or 40 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 36.

The square root of 1988028000 is about 44587.3076110231. The cubic root of 1988028000 is about 1257.4020544850.

The spelling of 1988028000 in words is "one billion, nine hundred eighty-eight million, twenty-eight thousand".