1987192 has 16 divisors (see below), whose sum is σ = 3769200. Its totient is φ = 982080.

The previous prime is 1987189. The next prime is 1987201. The reversal of 1987192 is 2917891.

It is a congruent number.

It is an unprimeable number.

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, 684 + ... + 2107.

It is an arithmetic number, because the mean of its divisors is an integer number (235575).

2^1987192 is an apocalyptic number.

It is an amenable number.

1987192 is a deficient number, since it is larger than the sum of its proper divisors (1782008).

1987192 is a wasteful number, since it uses less digits than its factorization.

1987192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2886 (or 2882 counting only the distinct ones).

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

The square root of 1987192 is about 1409.6779774119. The cubic root of 1987192 is about 125.7225776703.

The spelling of 1987192 in words is "one million, nine hundred eighty-seven thousand, one hundred ninety-two".