1487988 has 18 divisors (see below), whose sum is σ = 3761394. Its totient is φ = 495984.

The previous prime is 1487987. The next prime is 1487989. The reversal of 1487988 is 8897841.

It is an interprime number because it is at equal distance from previous prime (1487987) and next prime (1487989).

It can be written as a sum of positive squares in only one way, i.e., 1468944 + 19044 = 1212^2 + 138^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1487987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 20631 + ... + 20702.

2^1487988 is an apocalyptic number.

1487988 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1487988 is an abundant number, since it is smaller than the sum of its proper divisors (2273406).

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

1487988 is a wasteful number, since it uses less digits than its factorization.

1487988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41343 (or 41338 counting only the distinct ones).

The product of its digits is 129024, while the sum is 45.

The square root of 1487988 is about 1219.8311358545. The cubic root of 1487988 is about 114.1650425708.

The spelling of 1487988 in words is "one million, four hundred eighty-seven thousand, nine hundred eighty-eight".