87939328 has 36 divisors (see below), whose sum is σ = 176325660. Its totient is φ = 43771904.

The previous prime is 87939307. The next prime is 87939329. The reversal of 87939328 is 82393978.

It can be written as a sum of positive squares in 2 ways, for example, as 28217344 + 59721984 = 5312^2 + 7728^2 .

It is not an unprimeable number, because it can be changed into a prime (87939329) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68226 + ... + 69502.

It is an arithmetic number, because the mean of its divisors is an integer number (4897935).

Almost surely, 2^87939328 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 87939328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88162830).

87939328 is an abundant number, since it is smaller than the sum of its proper divisors (88386332).

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

87939328 is a wasteful number, since it uses less digits than its factorization.

87939328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1562 (or 1548 counting only the distinct ones).

The product of its digits is 653184, while the sum is 49.

The square root of 87939328 is about 9377.5971335945. The cubic root of 87939328 is about 444.6937724002.

The spelling of 87939328 in words is "eighty-seven million, nine hundred thirty-nine thousand, three hundred twenty-eight".