87805246 has 4 divisors (see below), whose sum is σ = 131707872. Its totient is φ = 43902622.

The previous prime is 87805229. The next prime is 87805247. The reversal of 87805246 is 64250878.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 64250878 = 2 ⋅32125439.

It is a super-2 number, since 2×87805246² = 15419522450241032, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 87805199 and 87805208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87805247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21951310 + ... + 21951313.

It is an arithmetic number, because the mean of its divisors is an integer number (32926968).

Almost surely, 2^87805246 is an apocalyptic number.

87805246 is a deficient number, since it is larger than the sum of its proper divisors (43902626).

87805246 is a wasteful number, since it uses less digits than its factorization.

87805246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43902625.

The product of its (nonzero) digits is 107520, while the sum is 40.

The square root of 87805246 is about 9370.4453469406. The cubic root of 87805246 is about 444.4676477099.

The spelling of 87805246 in words is "eighty-seven million, eight hundred five thousand, two hundred forty-six".