87740224 has 56 divisors (see below), whose sum is σ = 204569568. Its totient is φ = 36810240.

The previous prime is 87740221. The next prime is 87740249. The reversal of 87740224 is 42204778.

It is a self number, because there is not a number n which added to its sum of digits gives 87740224.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87740221) 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, 4359 + ... + 13945.

It is an arithmetic number, because the mean of its divisors is an integer number (3653028).

Almost surely, 2^87740224 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 87740224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102284784).

87740224 is an abundant number, since it is smaller than the sum of its proper divisors (116829344).

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

87740224 is a wasteful number, since it uses less digits than its factorization.

87740224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9623 (or 9613 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 34.

The square root of 87740224 is about 9366.9751787864. The cubic root of 87740224 is about 444.3579074479.

The spelling of 87740224 in words is "eighty-seven million, seven hundred forty thousand, two hundred twenty-four".