428432205746 has 4 divisors (see below), whose sum is σ = 642648308622. Its totient is φ = 214216102872.

The previous prime is 428432205709. The next prime is 428432205779. The reversal of 428432205746 is 647502234824.

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., 223245855121 + 205186350625 = 472489^2 + 452975^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 428432205746.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107108051435 + ... + 107108051438.

Almost surely, 2^428432205746 is an apocalyptic number.

428432205746 is a deficient number, since it is larger than the sum of its proper divisors (214216102876).

428432205746 is a wasteful number, since it uses less digits than its factorization.

428432205746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214216102875.

The product of its (nonzero) digits is 2580480, while the sum is 47.

The spelling of 428432205746 in words is "four hundred twenty-eight billion, four hundred thirty-two million, two hundred five thousand, seven hundred forty-six".