428585858 has 4 divisors (see below), whose sum is σ = 642878790. Its totient is φ = 214292928.

The previous prime is 428585851. The next prime is 428585893. The reversal of 428585858 is 858585824.

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

It can be written as a sum of positive squares in only one way, i.e., 364313569 + 64272289 = 19087^2 + 8017^2 .

It is not an unprimeable number, because it can be changed into a prime (428585851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107146463 + ... + 107146466.

Almost surely, 2^428585858 is an apocalyptic number.

428585858 is a deficient number, since it is larger than the sum of its proper divisors (214292932).

428585858 is a wasteful number, since it uses less digits than its factorization.

428585858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214292931.

The product of its digits is 4096000, while the sum is 53.

The square root of 428585858 is about 20702.3152811467. The cubic root of 428585858 is about 753.9559025026.

The spelling of 428585858 in words is "four hundred twenty-eight million, five hundred eighty-five thousand, eight hundred fifty-eight".