428803361 has 6 divisors (see below), whose sum is σ = 498812130. Its totient is φ = 367545696.

The previous prime is 428803357. The next prime is 428803363. The reversal of 428803361 is 163308824.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 317374225 + 111429136 = 17815^2 + 10556^2 .

It is not a de Polignac number, because 428803361 - 2² = 428803357 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (428803363) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4375496 + ... + 4375593.

It is an arithmetic number, because the mean of its divisors is an integer number (83135355).

Almost surely, 2^428803361 is an apocalyptic number.

It is an amenable number.

428803361 is a deficient number, since it is larger than the sum of its proper divisors (70008769).

428803361 is an equidigital number, since it uses as much as digits as its factorization.

428803361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8751103 (or 8751096 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 35.

The square root of 428803361 is about 20707.5677229365. The cubic root of 428803361 is about 754.0834226052.

The spelling of 428803361 in words is "four hundred twenty-eight million, eight hundred three thousand, three hundred sixty-one".