428693432 has 32 divisors (see below), whose sum is σ = 811399680. Its totient is φ = 212330880.

The previous prime is 428693431. The next prime is 428693443. The reversal of 428693432 is 234396824.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 428693432.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428693431) 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, 554198 + ... + 554970.

It is an arithmetic number, because the mean of its divisors is an integer number (25356240).

Almost surely, 2^428693432 is an apocalyptic number.

It is an amenable number.

428693432 is a deficient number, since it is larger than the sum of its proper divisors (382706248).

428693432 is a wasteful number, since it uses less digits than its factorization.

428693432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1343 (or 1339 counting only the distinct ones).

The product of its digits is 248832, while the sum is 41.

The square root of 428693432 is about 20704.9132333367. The cubic root of 428693432 is about 754.0189775869.

The spelling of 428693432 in words is "four hundred twenty-eight million, six hundred ninety-three thousand, four hundred thirty-two".