87156246 has 64 divisors (see below), whose sum is σ = 195084288. Its totient is φ = 25817088.

The previous prime is 87156241. The next prime is 87156247. The reversal of 87156246 is 64265178.

It is a super-2 number, since 2×87156246² = 15192422433625032, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87156241) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 227371 + ... + 227753.

It is an arithmetic number, because the mean of its divisors is an integer number (3048192).

Almost surely, 2^87156246 is an apocalyptic number.

87156246 is an abundant number, since it is smaller than the sum of its proper divisors (107928042).

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

87156246 is a wasteful number, since it uses less digits than its factorization.

87156246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 525.

The product of its digits is 80640, while the sum is 39.

The square root of 87156246 is about 9335.7509606887. The cubic root of 87156246 is about 443.3698653949.

The spelling of 87156246 in words is "eighty-seven million, one hundred fifty-six thousand, two hundred forty-six".