428734778348 has 24 divisors (see below), whose sum is σ = 795093141024. Its totient is φ = 201586668800.

The previous prime is 428734778347. The next prime is 428734778359. The reversal of 428734778348 is 843877437824.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (428734778341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2589008 + ... + 2749623.

It is an arithmetic number, because the mean of its divisors is an integer number (33128880876).

Almost surely, 2^428734778348 is an apocalyptic number.

It is an amenable number.

428734778348 is a deficient number, since it is larger than the sum of its proper divisors (366358362676).

428734778348 is a wasteful number, since it uses less digits than its factorization.

428734778348 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5339833 (or 5339831 counting only the distinct ones).

The product of its digits is 202309632, while the sum is 65.

The spelling of 428734778348 in words is "four hundred twenty-eight billion, seven hundred thirty-four million, seven hundred seventy-eight thousand, three hundred forty-eight".