428309484 has 24 divisors (see below), whose sum is σ = 1026400368. Its totient is φ = 138911040.

The previous prime is 428309477. The next prime is 428309501. The reversal of 428309484 is 484903824.

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, 481887 + ... + 482774.

It is an arithmetic number, because the mean of its divisors is an integer number (42766682).

Almost surely, 2^428309484 is an apocalyptic number.

It is an amenable number.

428309484 is an abundant number, since it is smaller than the sum of its proper divisors (598090884).

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

428309484 is a wasteful number, since it uses less digits than its factorization.

428309484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 964705 (or 964703 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 42.

The square root of 428309484 is about 20695.6392508180. The cubic root of 428309484 is about 753.7938045932.

The spelling of 428309484 in words is "four hundred twenty-eight million, three hundred nine thousand, four hundred eighty-four".