87217248 has 24 divisors (see below), whose sum is σ = 228945528. Its totient is φ = 29072384.

The previous prime is 87217243. The next prime is 87217267. The reversal of 87217248 is 84271278.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87217243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 454161 + ... + 454352.

It is an arithmetic number, because the mean of its divisors is an integer number (9539397).

Almost surely, 2^87217248 is an apocalyptic number.

It is an amenable number.

87217248 is an abundant number, since it is smaller than the sum of its proper divisors (141728280).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

87217248 is a wasteful number, since it uses less digits than its factorization.

87217248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 908526 (or 908518 counting only the distinct ones).

The product of its digits is 50176, while the sum is 39.

The square root of 87217248 is about 9339.0175072113. The cubic root of 87217248 is about 443.4732817387.

The spelling of 87217248 in words is "eighty-seven million, two hundred seventeen thousand, two hundred forty-eight".