1987424 has 24 divisors (see below), whose sum is σ = 3946320. Its totient is φ = 985216.

The previous prime is 1987411. The next prime is 1987429. The reversal of 1987424 is 4247891.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1987429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5357 + ... + 5715.

It is an arithmetic number, because the mean of its divisors is an integer number (164430).

2^1987424 is an apocalyptic number.

It is an amenable number.

1987424 is a deficient number, since it is larger than the sum of its proper divisors (1958896).

1987424 is a wasteful number, since it uses less digits than its factorization.

1987424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 542 (or 534 counting only the distinct ones).

The product of its digits is 16128, while the sum is 35.

The square root of 1987424 is about 1409.7602633072. The cubic root of 1987424 is about 125.7274700852.

The spelling of 1987424 in words is "one million, nine hundred eighty-seven thousand, four hundred twenty-four".