428631574293 has 18 divisors (see below), whose sum is σ = 666771242774. Its totient is φ = 263768918544.

The previous prime is 428631574213. The next prime is 428631574297. The reversal of 428631574293 is 392475136824.

428631574293 is a `hidden beast` number, since 4 + 2 + 8 + 63 + 1 + 574 + 2 + 9 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 296744936049 + 131886638244 = 544743^2 + 363162^2 .

It is not a de Polignac number, because 428631574293 - 2⁹ = 428631573781 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428631574297) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 7051396 + ... + 7111922.

Almost surely, 2^428631574293 is an apocalyptic number.

It is an amenable number.

428631574293 is a deficient number, since it is larger than the sum of its proper divisors (238139668481).

428631574293 is an frugal number, since it uses more digits than its factorization.

428631574293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121073 (or 60543 counting only the distinct ones).

The product of its digits is 8709120, while the sum is 54.

The spelling of 428631574293 in words is "four hundred twenty-eight billion, six hundred thirty-one million, five hundred seventy-four thousand, two hundred ninety-three".