428308972 has 24 divisors (see below), whose sum is σ = 922512416. Its totient is φ = 169440768.

The previous prime is 428308949. The next prime is 428308973. The reversal of 428308972 is 279803824.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (428308973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 587973 + ... + 588700.

Almost surely, 2^428308972 is an apocalyptic number.

It is an amenable number.

428308972 is an abundant number, since it is smaller than the sum of its proper divisors (494203444).

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

428308972 is a wasteful number, since it uses less digits than its factorization.

428308972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1176697 (or 1176695 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 43.

The square root of 428308972 is about 20695.6268810587. The cubic root of 428308972 is about 753.7935042321.

The spelling of 428308972 in words is "four hundred twenty-eight million, three hundred eight thousand, nine hundred seventy-two".