428086 has 4 divisors (see below), whose sum is σ = 642132. Its totient is φ = 214042.

The previous prime is 428083. The next prime is 428093. The reversal of 428086 is 680824.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107020 + ... + 107023.

It is an arithmetic number, because the mean of its divisors is an integer number (160533).

2⁴²⁸⁰⁸⁶ is an apocalyptic number.

428086 is a deficient number, since it is larger than the sum of its proper divisors (214046).

428086 is a wasteful number, since it uses less digits than its factorization.

428086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214045.

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 428086 is about 654.2828134683. The cubic root of 428086 is about 75.3662676543.

It can be divided in two parts, 42 and 8086, that added together give a triangular number (8128 = T₁₂₇).

The spelling of 428086 in words is "four hundred twenty-eight thousand, eighty-six".