87443642 has 48 divisors (see below), whose sum is σ = 160483680. Its totient is φ = 35380800.

The previous prime is 87443627. The next prime is 87443687. The reversal of 87443642 is 24634478.

It is a junction number, because it is equal to n+sod(n) for n = 87443596 and 87443605.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 107417 + ... + 108227.

It is an arithmetic number, because the mean of its divisors is an integer number (3343410).

Almost surely, 2^87443642 is an apocalyptic number.

87443642 is a deficient number, since it is larger than the sum of its proper divisors (73040038).

87443642 is a wasteful number, since it uses less digits than its factorization.

87443642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 879 (or 866 counting only the distinct ones).

The product of its digits is 129024, while the sum is 38.

The square root of 87443642 is about 9351.1305198890. The cubic root of 87443642 is about 443.8566651739.

It can be divided in two parts, 874436 and 42, that added together give a palindrome (874478).

The spelling of 87443642 in words is "eighty-seven million, four hundred forty-three thousand, six hundred forty-two".