87241384 has 8 divisors (see below), whose sum is σ = 163577610. Its totient is φ = 43620688.

The previous prime is 87241381. The next prime is 87241397. The reversal of 87241384 is 48314278.

It can be written as a sum of positive squares in only one way, i.e., 71064900 + 16176484 = 8430^2 + 4022^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-3 number, since 3×87241384³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (87241381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5452579 + ... + 5452594.

Almost surely, 2^87241384 is an apocalyptic number.

It is an amenable number.

87241384 is a deficient number, since it is larger than the sum of its proper divisors (76336226).

87241384 is a wasteful number, since it uses less digits than its factorization.

87241384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10905179 (or 10905175 counting only the distinct ones).

The product of its digits is 43008, while the sum is 37.

The square root of 87241384 is about 9340.3096308420. The cubic root of 87241384 is about 443.5141860482.

The spelling of 87241384 in words is "eighty-seven million, two hundred forty-one thousand, three hundred eighty-four".