987634542 has 16 divisors (see below), whose sum is σ = 2012538960. Its totient is φ = 322999872.

The previous prime is 987634541. The next prime is 987634597. The reversal of 987634542 is 245436789.

It is a junction number, because it is equal to n+sod(n) for n = 987634491 and 987634500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (987634541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1552567 + ... + 1553202.

It is an arithmetic number, because the mean of its divisors is an integer number (125783685).

Almost surely, 2^987634542 is an apocalyptic number.

987634542 is an abundant number, since it is smaller than the sum of its proper divisors (1024904418).

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

987634542 is a wasteful number, since it uses less digits than its factorization.

987634542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3105827.

The product of its digits is 1451520, while the sum is 48.

The square root of 987634542 is about 31426.6533693933. The cubic root of 987634542 is about 995.8610735891.

The spelling of 987634542 in words is "nine hundred eighty-seven million, six hundred thirty-four thousand, five hundred forty-two".