428109082 has 8 divisors (see below), whose sum is σ = 642260052. Its totient is φ = 214022400.

The previous prime is 428109067. The next prime is 428109091. The reversal of 428109082 is 280901824.

It can be written as a sum of positive squares in 2 ways, for example, as 419471361 + 8637721 = 20481^2 + 2939^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7482 + ... + 30202.

Almost surely, 2^428109082 is an apocalyptic number.

428109082 is a deficient number, since it is larger than the sum of its proper divisors (214150970).

428109082 is a wasteful number, since it uses less digits than its factorization.

428109082 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32144.

The product of its (nonzero) digits is 9216, while the sum is 34.

The square root of 428109082 is about 20690.7970363638. The cubic root of 428109082 is about 753.6762218966.

The spelling of 428109082 in words is "four hundred twenty-eight million, one hundred nine thousand, eighty-two".