428729365 has 8 divisors (see below), whose sum is σ = 521523288. Its totient is φ = 338284800.

The previous prime is 428729351. The next prime is 428729369. The reversal of 428729365 is 563927824.

It can be written as a sum of positive squares in 4 ways, for example, as 69588964 + 359140401 = 8342^2 + 18951^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 428729365 - 2¹¹ = 428727317 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428729369) 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, 586936 + ... + 587665.

It is an arithmetic number, because the mean of its divisors is an integer number (65190411).

Almost surely, 2^428729365 is an apocalyptic number.

It is an amenable number.

428729365 is a deficient number, since it is larger than the sum of its proper divisors (92793923).

428729365 is a wasteful number, since it uses less digits than its factorization.

428729365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1174679.

The product of its digits is 725760, while the sum is 46.

The square root of 428729365 is about 20705.7809560519. The cubic root of 428729365 is about 754.0400442396.

The spelling of 428729365 in words is "four hundred twenty-eight million, seven hundred twenty-nine thousand, three hundred sixty-five".