428085145 has 8 divisors (see below), whose sum is σ = 515176200. Its totient is φ = 341485440.

The previous prime is 428085139. The next prime is 428085191. The reversal of 428085145 is 541580824.

It can be written as a sum of positive squares in 4 ways, for example, as 48108096 + 379977049 = 6936^2 + 19493^2 .

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

It is not a de Polignac number, because 428085145 - 2⁵ = 428085113 is a prime.

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 7 ways as a sum of consecutive naturals, for example, 120916 + ... + 124405.

It is an arithmetic number, because the mean of its divisors is an integer number (64397025).

Almost surely, 2^428085145 is an apocalyptic number.

It is an amenable number.

428085145 is a deficient number, since it is larger than the sum of its proper divisors (87091055).

428085145 is a wasteful number, since it uses less digits than its factorization.

428085145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245675.

The product of its (nonzero) digits is 51200, while the sum is 37.

The square root of 428085145 is about 20690.2185827023. The cubic root of 428085145 is about 753.6621747883.

The spelling of 428085145 in words is "four hundred twenty-eight million, eighty-five thousand, one hundred forty-five".