87860340 has 72 divisors (see below), whose sum is σ = 268293480. Its totient is φ = 23272704.

The previous prime is 87860329. The next prime is 87860363. The reversal of 87860340 is 4306878.

87860340 is a `hidden beast` number, since 8 + 7 + 8 + 603 + 40 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 138384 + 87721956 = 372^2 + 9366^2 .

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 87860295 and 87860304.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26706 + ... + 29814.

Almost surely, 2^87860340 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 87860340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (134146740).

87860340 is an abundant number, since it is smaller than the sum of its proper divisors (180433140).

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

87860340 is a wasteful number, since it uses less digits than its factorization.

87860340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3281 (or 3276 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 87860340 is about 9373.3846608362. The cubic root of 87860340 is about 444.5605896918.

The spelling of 87860340 in words is "eighty-seven million, eight hundred sixty thousand, three hundred forty".