87257078 has 8 divisors (see below), whose sum is σ = 136576368. Its totient is φ = 41731624.

The previous prime is 87257077. The next prime is 87257087. The reversal of 87257078 is 87075278.

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

It is a super-2 number, since 2×87257078² = 15227595322196168, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87257077) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 948401 + ... + 948492.

It is an arithmetic number, because the mean of its divisors is an integer number (17072046).

Almost surely, 2^87257078 is an apocalyptic number.

87257078 is a deficient number, since it is larger than the sum of its proper divisors (49319290).

87257078 is a wasteful number, since it uses less digits than its factorization.

87257078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1896918.

The product of its (nonzero) digits is 219520, while the sum is 44.

The square root of 87257078 is about 9341.1497151047. The cubic root of 87257078 is about 443.5407792925.

The spelling of 87257078 in words is "eighty-seven million, two hundred fifty-seven thousand, seventy-eight".