428372479044 has 144 divisors (see below), whose sum is σ = 1139694716160. Its totient is φ = 140675577120.

The previous prime is 428372479037. The next prime is 428372479049. The reversal of 428372479044 is 440974273824.

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 (428372479049) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 17687047 + ... + 17711249.

It is an arithmetic number, because the mean of its divisors is an integer number (7914546640).

Almost surely, 2^428372479044 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 428372479044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (569847358080).

428372479044 is an abundant number, since it is smaller than the sum of its proper divisors (711322237116).

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

428372479044 is a wasteful number, since it uses less digits than its factorization.

428372479044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24492 (or 24478 counting only the distinct ones).

The product of its (nonzero) digits is 10838016, while the sum is 54.

The spelling of 428372479044 in words is "four hundred twenty-eight billion, three hundred seventy-two million, four hundred seventy-nine thousand, forty-four".