428168858 has 8 divisors (see below), whose sum is σ = 691657428. Its totient is φ = 197616384.

The previous prime is 428168849. The next prime is 428168887. The reversal of 428168858 is 858861824.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 425060689 + 3108169 = 20617^2 + 1763^2 .

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

It is a super-2 number, since 2×428168858² = 366657141922048328, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8233991 + ... + 8234042.

Almost surely, 2^428168858 is an apocalyptic number.

428168858 is a deficient number, since it is larger than the sum of its proper divisors (263488570).

428168858 is a wasteful number, since it uses less digits than its factorization.

428168858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16468048.

The product of its digits is 983040, while the sum is 50.

The square root of 428168858 is about 20692.2414928881. The cubic root of 428168858 is about 753.7112983566.

The spelling of 428168858 in words is "four hundred twenty-eight million, one hundred sixty-eight thousand, eight hundred fifty-eight".