87867240 has 64 divisors (see below), whose sum is σ = 266198400. Its totient is φ = 23200512.

The previous prime is 87867239. The next prime is 87867259. The reversal of 87867240 is 4276878.

It is a junction number, because it is equal to n+sod(n) for n = 87867192 and 87867201.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8806 + ... + 15914.

It is an arithmetic number, because the mean of its divisors is an integer number (4159350).

Almost surely, 2^87867240 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 87867240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (133099200).

87867240 is an abundant number, since it is smaller than the sum of its proper divisors (178331160).

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

87867240 is a wasteful number, since it uses less digits than its factorization.

87867240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7226 (or 7222 counting only the distinct ones).

The product of its (nonzero) digits is 150528, while the sum is 42.

The square root of 87867240 is about 9373.7527170285. The cubic root of 87867240 is about 444.5722270539.

The spelling of 87867240 in words is "eighty-seven million, eight hundred sixty-seven thousand, two hundred forty".