544533840 has 140 divisors (see below), whose sum is σ = 1898396724. Its totient is φ = 145193472.

The previous prime is 544533839. The next prime is 544533853. The reversal of 544533840 is 48335445.

544533840 is a `hidden beast` number, since 5 + 44 + 533 + 84 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 382124304 + 162409536 = 19548^2 + 12744^2 .

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 = 544533795 and 544533804.

It is a congruent number.

It is an unprimeable number.

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 27 ways as a sum of consecutive naturals, for example, 53652 + ... + 62988.

Almost surely, 2^544533840 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 544533840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (949198362).

544533840 is an abundant number, since it is smaller than the sum of its proper divisors (1353862884).

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

544533840 is an equidigital number, since it uses as much as digits as its factorization.

544533840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9368 (or 9347 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 36.

The square root of 544533840 is about 23335.2488737532. The cubic root of 544533840 is about 816.5979613634.

The spelling of 544533840 in words is "five hundred forty-four million, five hundred thirty-three thousand, eight hundred forty".