428301085 has 8 divisors (see below), whose sum is σ = 527852376. Its totient is φ = 333380160.

The previous prime is 428301067. The next prime is 428301157. The reversal of 428301085 is 580103824.

It can be written as a sum of positive squares in 4 ways, for example, as 14341369 + 413959716 = 3787^2 + 20346^2 .

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

It is not a de Polignac number, because 428301085 - 2²¹ = 426203933 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1157386 + ... + 1157755.

It is an arithmetic number, because the mean of its divisors is an integer number (65981547).

Almost surely, 2^428301085 is an apocalyptic number.

It is an amenable number.

428301085 is a deficient number, since it is larger than the sum of its proper divisors (99551291).

428301085 is a wasteful number, since it uses less digits than its factorization.

428301085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2315183.

The product of its (nonzero) digits is 7680, while the sum is 31.

The square root of 428301085 is about 20695.4363326797. The cubic root of 428301085 is about 753.7888773496.

The spelling of 428301085 in words is "four hundred twenty-eight million, three hundred one thousand, eighty-five".