428403064 has 16 divisors (see below), whose sum is σ = 803592720. Its totient is φ = 214111680.

The previous prime is 428403011. The next prime is 428403103. The reversal of 428403064 is 460304824.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11812 + ... + 31564.

It is an arithmetic number, because the mean of its divisors is an integer number (50224545).

Almost surely, 2^428403064 is an apocalyptic number.

It is an amenable number.

428403064 is a deficient number, since it is larger than the sum of its proper divisors (375189656).

428403064 is a wasteful number, since it uses less digits than its factorization.

428403064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22470 (or 22466 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 31.

The square root of 428403064 is about 20697.8999900956. The cubic root of 428403064 is about 753.8486986127.

Adding to 428403064 its reverse (460304824), we get a palindrome (888707888).

The spelling of 428403064 in words is "four hundred twenty-eight million, four hundred three thousand, sixty-four".