428401064 has 32 divisors (see below), whose sum is σ = 988619520. Its totient is φ = 169477056.

The previous prime is 428401009. The next prime is 428401073. The reversal of 428401064 is 460104824.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 293504 + ... + 294959.

It is an arithmetic number, because the mean of its divisors is an integer number (30894360).

Almost surely, 2^428401064 is an apocalyptic number.

It is an amenable number.

428401064 is an abundant number, since it is smaller than the sum of its proper divisors (560218456).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

428401064 is a wasteful number, since it uses less digits than its factorization.

428401064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 588489 (or 588485 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 29.

The square root of 428401064 is about 20697.8516759590. The cubic root of 428401064 is about 753.8475254965.

Adding to 428401064 its reverse (460104824), we get a palindrome (888505888).

The spelling of 428401064 in words is "four hundred twenty-eight million, four hundred one thousand, sixty-four".