87443700 has 216 divisors, whose sum is σ = 288002400. Its totient is φ = 20401920.

The previous prime is 87443689. The next prime is 87443701. The reversal of 87443700 is 734478.

It is a happy number.

87443700 is a nontrivial binomial coefficient, being equal to C(13225, 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87443701) 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 71 ways as a sum of consecutive naturals, for example, 3015286 + ... + 3015314.

Almost surely, 2^87443700 is an apocalyptic number.

87443700 is the 13224-th triangular number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 87443700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (144001200).

87443700 is an abundant number, since it is smaller than the sum of its proper divisors (200558700).

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

87443700 is a wasteful number, since it uses less digits than its factorization.

87443700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111 (or 81 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 33.

The square root of 87443700 is about 9351.1336211178. The cubic root of 87443700 is about 443.8567633083.

The spelling of 87443700 in words is "eighty-seven million, four hundred forty-three thousand, seven hundred".