87806286 has 24 divisors (see below), whose sum is σ = 190715304. Its totient is φ = 29196720.

The previous prime is 87806273. The next prime is 87806357. The reversal of 87806286 is 68260878.

It is a super-2 number, since 2×87806286² = 15419887722227592, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1785 + ... + 13371.

It is an arithmetic number, because the mean of its divisors is an integer number (7946471).

Almost surely, 2^87806286 is an apocalyptic number.

87806286 is an abundant number, since it is smaller than the sum of its proper divisors (102909018).

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

87806286 is a wasteful number, since it uses less digits than its factorization.

87806286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12016 (or 12013 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 45.

The square root of 87806286 is about 9370.5008404034. The cubic root of 87806286 is about 444.4694025197.

The spelling of 87806286 in words is "eighty-seven million, eight hundred six thousand, two hundred eighty-six".