7998111828 has 144 divisors (see below), whose sum is σ = 24283459200. Its totient is φ = 2269814400.

The previous prime is 7998111809. The next prime is 7998111833. The reversal of 7998111828 is 8281118997.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 794088 + ... + 804096.

Almost surely, 2^7998111828 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 7998111828, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12141729600).

7998111828 is an abundant number, since it is smaller than the sum of its proper divisors (16285347372).

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

7998111828 is a wasteful number, since it uses less digits than its factorization.

7998111828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10187 (or 10172 counting only the distinct ones).

The product of its digits is 580608, while the sum is 54.

The square root of 7998111828 is about 89432.1632747414. The cubic root of 7998111828 is about 1999.8426399526.

It can be divided in two parts, 79981 and 11828, that added together give a square (91809 = 303²).

The spelling of 7998111828 in words is "seven billion, nine hundred ninety-eight million, one hundred eleven thousand, eight hundred twenty-eight".