428729323 has 16 divisors (see below), whose sum is σ = 481536000. Its totient is φ = 378280800.

The previous prime is 428729293. The next prime is 428729351. The reversal of 428729323 is 323927824.

It is a cyclic number.

It is not a de Polignac number, because 428729323 - 2⁵ = 428729291 is a prime.

It is not an unprimeable number, because it can be changed into a prime (428729383) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 202038 + ... + 204148.

It is an arithmetic number, because the mean of its divisors is an integer number (30096000).

Almost surely, 2^428729323 is an apocalyptic number.

428729323 is a deficient number, since it is larger than the sum of its proper divisors (52806677).

428729323 is a wasteful number, since it uses less digits than its factorization.

428729323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2658.

The product of its digits is 145152, while the sum is 40.

The square root of 428729323 is about 20705.7799418423. The cubic root of 428729323 is about 754.0400196167.

The spelling of 428729323 in words is "four hundred twenty-eight million, seven hundred twenty-nine thousand, three hundred twenty-three".