1987412 has 12 divisors (see below), whose sum is σ = 3974880. Its totient is φ = 851736.

The previous prime is 1987411. The next prime is 1987429. The reversal of 1987412 is 2147891.

1987412 is an admirable number.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1987411) 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 3 ways as a sum of consecutive naturals, for example, 35462 + ... + 35517.

It is an arithmetic number, because the mean of its divisors is an integer number (331240).

2^1987412 is an apocalyptic number.

It is an amenable number.

1987412 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1987412 is a wasteful number, since it uses less digits than its factorization.

1987412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70990 (or 70988 counting only the distinct ones).

The product of its digits is 4032, while the sum is 32.

The square root of 1987412 is about 1409.7560072580. The cubic root of 1987412 is about 125.7272170386.

The spelling of 1987412 in words is "one million, nine hundred eighty-seven thousand, four hundred twelve".