428972868 has 48 divisors (see below), whose sum is σ = 1113336000. Its totient is φ = 142838784.

The previous prime is 428972867. The next prime is 428972903. The reversal of 428972868 is 868279824.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (428972867) 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 15 ways as a sum of consecutive naturals, for example, 150763 + ... + 153581.

It is an arithmetic number, because the mean of its divisors is an integer number (23194500).

Almost surely, 2^428972868 is an apocalyptic number.

It is an amenable number.

428972868 is an abundant number, since it is smaller than the sum of its proper divisors (684363132).

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

428972868 is a wasteful number, since it uses less digits than its factorization.

428972868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4241 (or 4233 counting only the distinct ones).

The product of its digits is 3096576, while the sum is 54.

The square root of 428972868 is about 20711.6601941998. The cubic root of 428972868 is about 754.1827731787.

The spelling of 428972868 in words is "four hundred twenty-eight million, nine hundred seventy-two thousand, eight hundred sixty-eight".