1987912 has 32 divisors (see below), whose sum is σ = 4043520. Its totient is φ = 912640.

The previous prime is 1987901. The next prime is 1987919. The reversal of 1987912 is 2197891.

It is not an unprimeable number, because it can be changed into a prime (1987919) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6237 + ... + 6547.

It is an arithmetic number, because the mean of its divisors is an integer number (126360).

2^1987912 is an apocalyptic number.

It is an amenable number.

1987912 is an abundant number, since it is smaller than the sum of its proper divisors (2055608).

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

1987912 is a wasteful number, since it uses less digits than its factorization.

1987912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381 (or 377 counting only the distinct ones).

The product of its digits is 9072, while the sum is 37.

The square root of 1987912 is about 1409.9333317572. The cubic root of 1987912 is about 125.7377597842.

It can be divided in two parts, 19879 and 12, that added together give a palindrome (19891).

The spelling of 1987912 in words is "one million, nine hundred eighty-seven thousand, nine hundred twelve".