85428214 has 4 divisors (see below), whose sum is σ = 128142324. Its totient is φ = 42714106.

The previous prime is 85428197. The next prime is 85428241. The reversal of 85428214 is 41282458.

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

It is a self number, because there is not a number n which added to its sum of digits gives 85428214.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21357052 + ... + 21357055.

It is an arithmetic number, because the mean of its divisors is an integer number (32035581).

Almost surely, 2^85428214 is an apocalyptic number.

85428214 is a deficient number, since it is larger than the sum of its proper divisors (42714110).

85428214 is a wasteful number, since it uses less digits than its factorization.

85428214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42714109.

The product of its digits is 20480, while the sum is 34.

The square root of 85428214 is about 9242.7384470188. The cubic root of 85428214 is about 440.4200774655.

The spelling of 85428214 in words is "eighty-five million, four hundred twenty-eight thousand, two hundred fourteen".