428291656 has 32 divisors (see below), whose sum is σ = 865771200. Its totient is φ = 197455680.

The previous prime is 428291651. The next prime is 428291713. The reversal of 428291656 is 656192824.

It is not an unprimeable number, because it can be changed into a prime (428291651) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 129301 + ... + 132571.

It is an arithmetic number, because the mean of its divisors is an integer number (27055350).

Almost surely, 2^428291656 is an apocalyptic number.

It is an amenable number.

428291656 is an abundant number, since it is smaller than the sum of its proper divisors (437479544).

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

428291656 is a wasteful number, since it uses less digits than its factorization.

428291656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4549 (or 4545 counting only the distinct ones).

The product of its digits is 207360, while the sum is 43.

The square root of 428291656 is about 20695.2085275795. The cubic root of 428291656 is about 753.7833457833.

The spelling of 428291656 in words is "four hundred twenty-eight million, two hundred ninety-one thousand, six hundred fifty-six".