87284670 has 64 divisors (see below), whose sum is σ = 240572160. Its totient is φ = 20044800.

The previous prime is 87284669. The next prime is 87284677. The reversal of 87284670 is 7648278.

It is a super-2 number, since 2×87284670² = 15237227234017800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87284677) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 691 + ... + 13230.

It is an arithmetic number, because the mean of its divisors is an integer number (3758940).

Almost surely, 2^87284670 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 87284670, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (120286080).

87284670 is an abundant number, since it is smaller than the sum of its proper divisors (153287490).

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

87284670 is a wasteful number, since it uses less digits than its factorization.

87284670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13961.

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

The square root of 87284670 is about 9342.6265043616. The cubic root of 87284670 is about 443.5875257866.

The spelling of 87284670 in words is "eighty-seven million, two hundred eighty-four thousand, six hundred seventy".