1988450 has 12 divisors (see below), whose sum is σ = 3698610. Its totient is φ = 795360.

The previous prime is 1988423. The next prime is 1988453. The reversal of 1988450 is 548891.

It can be written as a sum of positive squares in 3 ways, for example, as 1087849 + 900601 = 1043^2 + 949^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1988450.

It is not an unprimeable number, because it can be changed into a prime (1988453) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 19835 + ... + 19934.

2^1988450 is an apocalyptic number.

1988450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1988450 is a deficient number, since it is larger than the sum of its proper divisors (1710160).

1988450 is a wasteful number, since it uses less digits than its factorization.

1988450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39781 (or 39776 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 35.

The square root of 1988450 is about 1410.1241080132. The cubic root of 1988450 is about 125.7491018042.

The spelling of 1988450 in words is "one million, nine hundred eighty-eight thousand, four hundred fifty".