85720286 has 8 divisors (see below), whose sum is σ = 135347880. Its totient is φ = 40604328.

The previous prime is 85720237. The next prime is 85720291. The reversal of 85720286 is 68202758.

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

It is a Harshad number since it is a multiple of its sum of digits (38), and also a Moran number because the ratio is a prime number: 2255797 = 85720286 / (8 + 5 + 7 + 2 + 0 + 2 + 8 + 6).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1127861 + ... + 1127936.

It is an arithmetic number, because the mean of its divisors is an integer number (16918485).

Almost surely, 2^85720286 is an apocalyptic number.

85720286 is a deficient number, since it is larger than the sum of its proper divisors (49627594).

85720286 is a wasteful number, since it uses less digits than its factorization.

85720286 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2255818.

The product of its (nonzero) digits is 53760, while the sum is 38.

The square root of 85720286 is about 9258.5250445198. The cubic root of 85720286 is about 440.9214264848.

The spelling of 85720286 in words is "eighty-five million, seven hundred twenty thousand, two hundred eighty-six".