428430785722 has 8 divisors (see below), whose sum is σ = 642648962196. Its totient is φ = 214214464992.

The previous prime is 428430785711. The next prime is 428430785747. The reversal of 428430785722 is 227587034824.

It can be written as a sum of positive squares in 2 ways, for example, as 353645491761 + 74785293961 = 594681^2 + 273469^2 .

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

It is a super-2 number, since 2×428430785722² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 428430785722.

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, 616048 + ... + 1111924.

Almost surely, 2^428430785722 is an apocalyptic number.

428430785722 is a deficient number, since it is larger than the sum of its proper divisors (214218176474).

428430785722 is a wasteful number, since it uses less digits than its factorization.

428430785722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 927872.

The product of its (nonzero) digits is 6021120, while the sum is 52.

The spelling of 428430785722 in words is "four hundred twenty-eight billion, four hundred thirty million, seven hundred eighty-five thousand, seven hundred twenty-two".