87240169 has 8 divisors (see below), whose sum is σ = 92252160. Its totient is φ = 82365600.

The previous prime is 87240143. The next prime is 87240193. The reversal of 87240169 is 96104278.

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 87240169 - 2⁵ = 87240137 is a prime.

It is a super-2 number, since 2×87240169² = 15221694174297122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87240199) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33049 + ... + 35590.

It is an arithmetic number, because the mean of its divisors is an integer number (11531520).

Almost surely, 2^87240169 is an apocalyptic number.

It is an amenable number.

87240169 is a deficient number, since it is larger than the sum of its proper divisors (5011991).

87240169 is a wasteful number, since it uses less digits than its factorization.

87240169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68711.

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 87240169 is about 9340.2445899452. The cubic root of 87240169 is about 443.5121271162.

It can be divided in two parts, 872 and 40169, that added together give a triangular number (41041 = T₂₈₆).

The spelling of 87240169 in words is "eighty-seven million, two hundred forty thousand, one hundred sixty-nine".