1998228048 has 80 divisors (see below), whose sum is σ = 5349032640. Its totient is φ = 642383872.

The previous prime is 1998227893. The next prime is 1998228049. The reversal of 1998228048 is 8408228991.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1998228049) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 143440 + ... + 156752.

It is an arithmetic number, because the mean of its divisors is an integer number (66862908).

Almost surely, 2^1998228048 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 1998228048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2674516320).

1998228048 is an abundant number, since it is smaller than the sum of its proper divisors (3350804592).

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

1998228048 is a wasteful number, since it uses less digits than its factorization.

1998228048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13436 (or 13430 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 51.

The square root of 1998228048 is about 44701.5441344032. The cubic root of 1998228048 is about 1259.5488533501.

The spelling of 1998228048 in words is "one billion, nine hundred ninety-eight million, two hundred twenty-eight thousand, forty-eight".