87488731 has 8 divisors (see below), whose sum is σ = 95606784. Its totient is φ = 79398120.

The previous prime is 87488729. The next prime is 87488747. The reversal of 87488731 is 13788478.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 87488731 - 2¹ = 87488729 is a prime.

It is a super-2 number, since 2×87488731² = 15308556103980722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87438731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126 + ... + 13228.

It is an arithmetic number, because the mean of its divisors is an integer number (11950848).

Almost surely, 2^87488731 is an apocalyptic number.

87488731 is a deficient number, since it is larger than the sum of its proper divisors (8118053).

87488731 is a wasteful number, since it uses less digits than its factorization.

87488731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13721.

The product of its digits is 301056, while the sum is 46.

The square root of 87488731 is about 9353.5410941525. The cubic root of 87488731 is about 443.9329414051.

The spelling of 87488731 in words is "eighty-seven million, four hundred eighty-eight thousand, seven hundred thirty-one".