998740212 has 24 divisors (see below), whose sum is σ = 2331000000.
Its totient is φ = 332826816.
The previous prime is 998740189. The next prime is 998740213. The reversal of 998740212 is 212047899.
It is a super-2 number, since 2×9987402122 = 1994964022131609888, which contains 22 as substring.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (998740213) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51664 + ... + 68312.
It is an arithmetic number, because the mean of its divisors is an integer number (97125000).
Almost surely, 2998740212 is an apocalyptic number.
It is an amenable number.
998740212 is an abundant number, since it is smaller than the sum of its proper divisors (1332259788).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
998740212 is a wasteful number, since it uses less digits than its factorization.
998740212 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 21655 (or 21653 counting only the distinct ones).
The product of its (nonzero) digits is 72576, while the sum is 42.
The square root of 998740212 is about 31602.8513270559.
The cubic root of 998740212 is about 999.5798942025.
The spelling of 998740212 in words is "nine hundred ninety-eight million, seven hundred forty thousand, two hundred twelve".