1987926 has 16 divisors (see below), whose sum is σ = 4073328. Its totient is φ = 646400.

The previous prime is 1987919. The next prime is 1987939. The reversal of 1987926 is 6297891.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3795 + ... + 4286.

It is an arithmetic number, because the mean of its divisors is an integer number (254583).

2^1987926 is an apocalyptic number.

1987926 is an abundant number, since it is smaller than the sum of its proper divisors (2085402).

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

1987926 is a wasteful number, since it uses less digits than its factorization.

1987926 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8127.

The product of its digits is 54432, while the sum is 42.

The square root of 1987926 is about 1409.9382965222. The cubic root of 1987926 is about 125.7380549556.

The spelling of 1987926 in words is "one million, nine hundred eighty-seven thousand, nine hundred twenty-six".