87488890 has 8 divisors (see below), whose sum is σ = 157480020. Its totient is φ = 34995552.

The previous prime is 87488879. The next prime is 87488893. The reversal of 87488890 is 9888478.

It can be written as a sum of positive squares in 2 ways, for example, as 70274689 + 17214201 = 8383^2 + 4149^2 .

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

It is not an unprimeable number, because it can be changed into a prime (87488893) 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 3 ways as a sum of consecutive naturals, for example, 4374435 + ... + 4374454.

Almost surely, 2^87488890 is an apocalyptic number.

87488890 is a deficient number, since it is larger than the sum of its proper divisors (69991130).

87488890 is a wasteful number, since it uses less digits than its factorization.

87488890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8748896.

The product of its (nonzero) digits is 1032192, while the sum is 52.

The square root of 87488890 is about 9353.5495936035. The cubic root of 87488890 is about 443.9332103361.

The spelling of 87488890 in words is "eighty-seven million, four hundred eighty-eight thousand, eight hundred ninety".