87478824 has 16 divisors (see below), whose sum is σ = 218697120. Its totient is φ = 29159600.

The previous prime is 87478823. The next prime is 87478829. The reversal of 87478824 is 42887478.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (87478823) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1822452 + ... + 1822499.

It is an arithmetic number, because the mean of its divisors is an integer number (13668570).

Almost surely, 2^87478824 is an apocalyptic number.

It is an amenable number.

87478824 is an abundant number, since it is smaller than the sum of its proper divisors (131218296).

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

87478824 is a wasteful number, since it uses less digits than its factorization.

87478824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3644960 (or 3644956 counting only the distinct ones).

The product of its digits is 802816, while the sum is 48.

The square root of 87478824 is about 9353.0114936313. The cubic root of 87478824 is about 443.9161841625.

It can be divided in two parts, 8747 and 8824, that added together give a palindrome (17571).

The spelling of 87478824 in words is "eighty-seven million, four hundred seventy-eight thousand, eight hundred twenty-four".