428945896 has 8 divisors (see below), whose sum is σ = 804273570. Its totient is φ = 214472944.

The previous prime is 428945863. The next prime is 428945903. The reversal of 428945896 is 698549824.

It can be written as a sum of positive squares in only one way, i.e., 408605796 + 20340100 = 20214^2 + 4510^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-3 number, since 3×428945896³ (a number of 27 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26809111 + ... + 26809126.

Almost surely, 2^428945896 is an apocalyptic number.

428945896 is the 11071-st centered heptagonal number.

It is an amenable number.

428945896 is a deficient number, since it is larger than the sum of its proper divisors (375327674).

428945896 is a wasteful number, since it uses less digits than its factorization.

428945896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53618243 (or 53618239 counting only the distinct ones).

The product of its digits is 4976640, while the sum is 55.

The square root of 428945896 is about 20711.0090531582. The cubic root of 428945896 is about 754.1669662395.

The spelling of 428945896 in words is "four hundred twenty-eight million, nine hundred forty-five thousand, eight hundred ninety-six".