544537728 has 384 divisors, whose sum is σ = 1933626240. Its totient is φ = 149299200.

The previous prime is 544537703. The next prime is 544537729. The reversal of 544537728 is 827735445.

544537728 is a `hidden beast` number, since 5 + 44 + 537 + 72 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (384).

It is not an unprimeable number, because it can be changed into a prime (544537729) 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, 8926818 + ... + 8926878.

It is an arithmetic number, because the mean of its divisors is an integer number (5035485).

Almost surely, 2^544537728 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 544537728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (966813120).

544537728 is an abundant number, since it is smaller than the sum of its proper divisors (1389088512).

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

544537728 is an equidigital number, since it uses as much as digits as its factorization.

544537728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138 (or 114 counting only the distinct ones).

The product of its digits is 940800, while the sum is 45.

The square root of 544537728 is about 23335.3321810511. The cubic root of 544537728 is about 816.5999048761.

The spelling of 544537728 in words is "five hundred forty-four million, five hundred thirty-seven thousand, seven hundred twenty-eight".