87718044 has 48 divisors (see below), whose sum is σ = 216034560. Its totient is φ = 27646080.

The previous prime is 87718039. The next prime is 87718049. The reversal of 87718044 is 44081778.

It is an interprime number because it is at equal distance from previous prime (87718039) and next prime (87718049).

It is a junction number, because it is equal to n+sod(n) for n = 87717993 and 87718011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87718049) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22779 + ... + 26349.

It is an arithmetic number, because the mean of its divisors is an integer number (4500720).

Almost surely, 2^87718044 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 87718044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108017280).

87718044 is an abundant number, since it is smaller than the sum of its proper divisors (128316516).

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

87718044 is a wasteful number, since it uses less digits than its factorization.

87718044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3690 (or 3688 counting only the distinct ones).

The product of its (nonzero) digits is 50176, while the sum is 39.

The square root of 87718044 is about 9365.7911571847. The cubic root of 87718044 is about 444.3204609627.

The spelling of 87718044 in words is "eighty-seven million, seven hundred eighteen thousand, forty-four".