428162544 has 160 divisors (see below), whose sum is σ = 1312683840. Its totient is φ = 133152768.

The previous prime is 428162543. The next prime is 428162591. The reversal of 428162544 is 445261824.

428162544 is a `hidden beast` number, since 4 + 28 + 1 + 625 + 4 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 428162499 and 428162508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428162543) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1270344 + ... + 1270680.

It is an arithmetic number, because the mean of its divisors is an integer number (8204274).

Almost surely, 2^428162544 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 428162544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (656341920).

428162544 is an abundant number, since it is smaller than the sum of its proper divisors (884521296).

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

428162544 is a wasteful number, since it uses less digits than its factorization.

428162544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 544 (or 532 counting only the distinct ones).

The product of its digits is 61440, while the sum is 36.

The square root of 428162544 is about 20692.0889230643. The cubic root of 428162544 is about 753.7075934658.

The spelling of 428162544 in words is "four hundred twenty-eight million, one hundred sixty-two thousand, five hundred forty-four".