1998254 has 8 divisors (see below), whose sum is σ = 3011160. Its totient is φ = 994536.

The previous prime is 1998251. The next prime is 1998257. The reversal of 1998254 is 4528991.

It is an interprime number because it is at equal distance from previous prime (1998251) and next prime (1998257).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1998251) 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, 1724 + ... + 2639.

It is an arithmetic number, because the mean of its divisors is an integer number (376395).

2^1998254 is an apocalyptic number.

1998254 is a deficient number, since it is larger than the sum of its proper divisors (1012906).

1998254 is a wasteful number, since it uses less digits than its factorization.

1998254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4594.

The product of its digits is 25920, while the sum is 38.

The square root of 1998254 is about 1413.5961233676. The cubic root of 1998254 is about 125.9554306126.

The spelling of 1998254 in words is "one million, nine hundred ninety-eight thousand, two hundred fifty-four".