87371728 has 40 divisors (see below), whose sum is σ = 179363520. Its totient is φ = 41114880.

The previous prime is 87371717. The next prime is 87371737. The reversal of 87371728 is 82717378.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49908 + ... + 51628.

It is an arithmetic number, because the mean of its divisors is an integer number (4484088).

Almost surely, 2^87371728 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 87371728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89681760).

87371728 is an abundant number, since it is smaller than the sum of its proper divisors (91991792).

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

87371728 is a wasteful number, since it uses less digits than its factorization.

87371728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1915 (or 1909 counting only the distinct ones).

The product of its digits is 131712, while the sum is 43.

The square root of 87371728 is about 9347.2845254651. The cubic root of 87371728 is about 443.7349553056.

The spelling of 87371728 in words is "eighty-seven million, three hundred seventy-one thousand, seven hundred twenty-eight".