87257146 has 8 divisors (see below), whose sum is σ = 131719860. Its totient is φ = 43350528.

The previous prime is 87257129. The next prime is 87257167. The reversal of 87257146 is 64175278.

It can be written as a sum of positive squares in 2 ways, for example, as 87142225 + 114921 = 9335^2 + 339^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×87257146² = 15227619056130632, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 87257099 and 87257108.

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 3 ways as a sum of consecutive naturals, for example, 138631 + ... + 139258.

Almost surely, 2^87257146 is an apocalyptic number.

87257146 is a deficient number, since it is larger than the sum of its proper divisors (44462714).

87257146 is a wasteful number, since it uses less digits than its factorization.

87257146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278048.

The product of its digits is 94080, while the sum is 40.

The square root of 87257146 is about 9341.1533549129. The cubic root of 87257146 is about 443.5408945105.

The spelling of 87257146 in words is "eighty-seven million, two hundred fifty-seven thousand, one hundred forty-six".