427778630428 has 12 divisors (see below), whose sum is σ = 748625661280. Its totient is φ = 213885584352.

The previous prime is 427778630393. The next prime is 427778630473. The reversal of 427778630428 is 824036877724.

It is a congruent number.

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, 666276 + ... + 1139947.

Almost surely, 2^427778630428 is an apocalyptic number.

It is an amenable number.

427778630428 is a deficient number, since it is larger than the sum of its proper divisors (320847030852).

427778630428 is a wasteful number, since it uses less digits than its factorization.

427778630428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1865436 (or 1865434 counting only the distinct ones).

The product of its (nonzero) digits is 25288704, while the sum is 58.

The spelling of 427778630428 in words is "four hundred twenty-seven billion, seven hundred seventy-eight million, six hundred thirty thousand, four hundred twenty-eight".