86514278 has 4 divisors (see below), whose sum is σ = 129771420. Its totient is φ = 43257138.

The previous prime is 86514257. The next prime is 86514289. The reversal of 86514278 is 87241568.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×86514278² = 14969440595722568, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21628568 + ... + 21628571.

It is an arithmetic number, because the mean of its divisors is an integer number (32442855).

Almost surely, 2^86514278 is an apocalyptic number.

86514278 is a deficient number, since it is larger than the sum of its proper divisors (43257142).

86514278 is a wasteful number, since it uses less digits than its factorization.

86514278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43257141.

The product of its digits is 107520, while the sum is 41.

The square root of 86514278 is about 9301.3051772318. The cubic root of 86514278 is about 442.2786031112.

The spelling of 86514278 in words is "eighty-six million, five hundred fourteen thousand, two hundred seventy-eight".