87443312 has 90 divisors (see below), whose sum is σ = 196518672. Its totient is φ = 37646400.

The previous prime is 87443311. The next prime is 87443329. The reversal of 87443312 is 21334478.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87443311) 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 17 ways as a sum of consecutive naturals, for example, 1860473 + ... + 1860519.

Almost surely, 2^87443312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 87443312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98259336).

87443312 is an abundant number, since it is smaller than the sum of its proper divisors (109075360).

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

87443312 is a wasteful number, since it uses less digits than its factorization.

87443312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139 (or 91 counting only the distinct ones).

The product of its digits is 16128, while the sum is 32.

The square root of 87443312 is about 9351.1128749470. The cubic root of 87443312 is about 443.8561068223.

The spelling of 87443312 in words is "eighty-seven million, four hundred forty-three thousand, three hundred twelve".