554421728 has 24 divisors (see below), whose sum is σ = 1247449392. Its totient is φ = 237609216.

The previous prime is 554421719. The next prime is 554421733. The reversal of 554421728 is 827124455.

It is a junction number, because it is equal to n+sod(n) for n = 554421691 and 554421700.

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 3 ways as a sum of consecutive naturals, for example, 1237325 + ... + 1237772.

It is an arithmetic number, because the mean of its divisors is an integer number (51977058).

Almost surely, 2^554421728 is an apocalyptic number.

It is an amenable number.

554421728 is an abundant number, since it is smaller than the sum of its proper divisors (693027664).

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

554421728 is a wasteful number, since it uses less digits than its factorization.

554421728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2475114 (or 2475106 counting only the distinct ones).

The product of its digits is 89600, while the sum is 38.

The square root of 554421728 is about 23546.1616404882. The cubic root of 554421728 is about 821.5110587129.

It can be divided in two parts, 5544 and 21728, that added together give a palindrome (27272).

The spelling of 554421728 in words is "five hundred fifty-four million, four hundred twenty-one thousand, seven hundred twenty-eight".