428763344 has 10 divisors (see below), whose sum is σ = 830729010. Its totient is φ = 214381664.

The previous prime is 428763319. The next prime is 428763397. The reversal of 428763344 is 443367824.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 400800400 + 27962944 = 20020^2 + 5288^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13398839 + ... + 13398870.

It is an arithmetic number, because the mean of its divisors is an integer number (83072901).

Almost surely, 2^428763344 is an apocalyptic number.

It is an amenable number.

428763344 is a deficient number, since it is larger than the sum of its proper divisors (401965666).

428763344 is a wasteful number, since it uses less digits than its factorization.

428763344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26797717 (or 26797711 counting only the distinct ones).

The product of its digits is 387072, while the sum is 41.

The square root of 428763344 is about 20706.6014594380. The cubic root of 428763344 is about 754.0599642263.

The spelling of 428763344 in words is "four hundred twenty-eight million, seven hundred sixty-three thousand, three hundred forty-four".