1987482420 has 576 divisors, whose sum is σ = 8030969856. Its totient is φ = 400619520.

The previous prime is 1987482401. The next prime is 1987482473. The reversal of 1987482420 is 242847891.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 17588284 + ... + 17588396.

It is an arithmetic number, because the mean of its divisors is an integer number (13942656).

Almost surely, 2^1987482420 is an apocalyptic number.

1987482420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1987482420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4015484928).

1987482420 is an abundant number, since it is smaller than the sum of its proper divisors (6043487436).

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

1987482420 is a wasteful number, since it uses less digits than its factorization.

1987482420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202 (or 188 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 45.

The square root of 1987482420 is about 44581.1890823921. The cubic root of 1987482420 is about 1257.2870198582.

The spelling of 1987482420 in words is "one billion, nine hundred eighty-seven million, four hundred eighty-two thousand, four hundred twenty".