87397530 has 128 divisors (see below), whose sum is σ = 246343680. Its totient is φ = 19618560.

The previous prime is 87397529. The next prime is 87397537. The reversal of 87397530 is 3579378.

It is not an unprimeable number, because it can be changed into a prime (87397537) 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 63 ways as a sum of consecutive naturals, for example, 332179 + ... + 332441.

It is an arithmetic number, because the mean of its divisors is an integer number (1924560).

Almost surely, 2^87397530 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 87397530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (123171840).

87397530 is an abundant number, since it is smaller than the sum of its proper divisors (158946150).

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

87397530 is a wasteful number, since it uses less digits than its factorization.

87397530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 356.

The product of its (nonzero) digits is 158760, while the sum is 42.

The square root of 87397530 is about 9348.6646105206. The cubic root of 87397530 is about 443.7786312281.

The spelling of 87397530 in words is "eighty-seven million, three hundred ninety-seven thousand, five hundred thirty".