428565722 has 8 divisors (see below), whose sum is σ = 692298516. Its totient is φ = 197799552.

The previous prime is 428565719. The next prime is 428565737. The reversal of 428565722 is 227565824.

It can be written as a sum of positive squares in 2 ways, for example, as 325766401 + 102799321 = 18049^2 + 10139^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 428565722.

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, 8241623 + ... + 8241674.

Almost surely, 2^428565722 is an apocalyptic number.

428565722 is a deficient number, since it is larger than the sum of its proper divisors (263732794).

428565722 is a wasteful number, since it uses less digits than its factorization.

428565722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16483312.

The product of its digits is 268800, while the sum is 41.

The square root of 428565722 is about 20701.8289530177. The cubic root of 428565722 is about 753.9440947605.

It can be divided in two parts, 4285 and 65722, that added together give a palindrome (70007).

The spelling of 428565722 in words is "four hundred twenty-eight million, five hundred sixty-five thousand, seven hundred twenty-two".