1000020998 has 8 divisors (see below), whose sum is σ = 1514883600. Its totient is φ = 495059800.

The previous prime is 1000020997. The next prime is 1000021003. The reversal of 1000020998 is 8990200001.

1000020998 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1000020998.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000020991) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2475098 + ... + 2475501.

It is an arithmetic number, because the mean of its divisors is an integer number (189360450).

Almost surely, 2^1000020998 is an apocalyptic number.

1000020998 is a deficient number, since it is larger than the sum of its proper divisors (514862602).

1000020998 is a wasteful number, since it uses less digits than its factorization.

1000020998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4950702.

The product of its (nonzero) digits is 1296, while the sum is 29.

The square root of 1000020998 is about 31623.1086074725. The cubic root of 1000020998 is about 1000.0069992843.

Adding to 1000020998 its reverse (8990200001), we get a palindrome (9990220999).

The spelling of 1000020998 in words is "one billion, twenty thousand, nine hundred ninety-eight".