87443742 has 16 divisors (see below), whose sum is σ = 177351552. Its totient is φ = 28737240.

The previous prime is 87443711. The next prime is 87443743. The reversal of 87443742 is 24734478.

It is a self number, because there is not a number n which added to its sum of digits gives 87443742.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87443743) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 102208 + ... + 103059.

It is an arithmetic number, because the mean of its divisors is an integer number (11084472).

Almost surely, 2^87443742 is an apocalyptic number.

87443742 is an abundant number, since it is smaller than the sum of its proper divisors (89907810).

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

87443742 is a wasteful number, since it uses less digits than its factorization.

87443742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205343.

The product of its digits is 150528, while the sum is 39.

The square root of 87443742 is about 9351.1358668346. The cubic root of 87443742 is about 443.8568343711.

The spelling of 87443742 in words is "eighty-seven million, four hundred forty-three thousand, seven hundred forty-two".