1998376 has 8 divisors (see below), whose sum is σ = 3746970. Its totient is φ = 999184.

The previous prime is 1998371. The next prime is 1998379. The reversal of 1998376 is 6738991.

It can be written as a sum of positive squares in only one way, i.e., 1758276 + 240100 = 1326^2 + 490^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (1998371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 124891 + ... + 124906.

2^1998376 is an apocalyptic number.

It is an amenable number.

1998376 is a deficient number, since it is larger than the sum of its proper divisors (1748594).

1998376 is a wasteful number, since it uses less digits than its factorization.

1998376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249803 (or 249799 counting only the distinct ones).

The product of its digits is 81648, while the sum is 43.

The square root of 1998376 is about 1413.6392750628. The cubic root of 1998376 is about 125.9579938920.

The spelling of 1998376 in words is "one million, nine hundred ninety-eight thousand, three hundred seventy-six".