428690829 has 32 divisors (see below), whose sum is σ = 665266176. Its totient is φ = 240488640.

The previous prime is 428690827. The next prime is 428690833. The reversal of 428690829 is 928096824.

It is not a de Polignac number, because 428690829 - 2¹ = 428690827 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428690827) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 472194 + ... + 473100.

It is an arithmetic number, because the mean of its divisors is an integer number (20789568).

Almost surely, 2^428690829 is an apocalyptic number.

It is an amenable number.

428690829 is a deficient number, since it is larger than the sum of its proper divisors (236575347).

428690829 is a wasteful number, since it uses less digits than its factorization.

428690829 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1305.

The product of its (nonzero) digits is 497664, while the sum is 48.

The square root of 428690829 is about 20704.8503737651. The cubic root of 428690829 is about 754.0174514649.

The spelling of 428690829 in words is "four hundred twenty-eight million, six hundred ninety thousand, eight hundred twenty-nine".