87001388 has 6 divisors (see below), whose sum is σ = 152252436. Its totient is φ = 43500692.

The previous prime is 87001381. The next prime is 87001403. The reversal of 87001388 is 88310078.

It is not an unprimeable number, because it can be changed into a prime (87001381) 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 as a sum of consecutive naturals, namely, 10875170 + ... + 10875177.

It is an arithmetic number, because the mean of its divisors is an integer number (25375406).

Almost surely, 2^87001388 is an apocalyptic number.

It is an amenable number.

87001388 is a deficient number, since it is larger than the sum of its proper divisors (65251048).

87001388 is a wasteful number, since it uses less digits than its factorization.

87001388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21750351 (or 21750349 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 35.

The square root of 87001388 is about 9327.4534574020. The cubic root of 87001388 is about 443.1071185914.

The spelling of 87001388 in words is "eighty-seven million, one thousand, three hundred eighty-eight".