1027998 has 16 divisors (see below), whose sum is σ = 2284560. Its totient is φ = 342648.

The previous prime is 1027987. The next prime is 1028003. The reversal of 1027998 is 8997201.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9465 + ... + 9572.

It is an arithmetic number, because the mean of its divisors is an integer number (142785).

2^1027998 is an apocalyptic number.

1027998 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1027998 is an abundant number, since it is smaller than the sum of its proper divisors (1256562).

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

1027998 is a wasteful number, since it uses less digits than its factorization.

1027998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19048 (or 19042 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 36.

The square root of 1027998 is about 1013.9023621631. The cubic root of 1027998 is about 100.9246897992.

It can be divided in two parts, 1027 and 998, that added together give a square (2025 = 45²).

The spelling of 1027998 in words is "one million, twenty-seven thousand, nine hundred ninety-eight".