428018775722 has 8 divisors (see below), whose sum is σ = 642110614500. Its totient is φ = 213981904224.

The previous prime is 428018775713. The next prime is 428018775733. The reversal of 428018775722 is 227577810824.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 425820197401 + 2198578321 = 652549^2 + 46889^2 .

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

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, 13722347 + ... + 13753502.

Almost surely, 2^428018775722 is an apocalyptic number.

428018775722 is a deficient number, since it is larger than the sum of its proper divisors (214091838778).

428018775722 is a wasteful number, since it uses less digits than its factorization.

428018775722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27483640.

The product of its (nonzero) digits is 3512320, while the sum is 53.

The spelling of 428018775722 in words is "four hundred twenty-eight billion, eighteen million, seven hundred seventy-five thousand, seven hundred twenty-two".