54345728 has 60 divisors (see below), whose sum is σ = 113242752. Its totient is φ = 26050560.

The previous prime is 54345721. The next prime is 54345761. The reversal of 54345728 is 82754345.

It is a happy number.

Its product of digits (134400) is a multiple of the sum of its prime divisors (140).

It is a junction number, because it is equal to n+sod(n) for n = 54345691 and 54345700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54345721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 507851 + ... + 507957.

Almost surely, 2^54345728 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 54345728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56621376).

54345728 is an abundant number, since it is smaller than the sum of its proper divisors (58897024).

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

54345728 is an equidigital number, since it uses as much as digits as its factorization.

54345728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166 (or 140 counting only the distinct ones).

The product of its digits is 134400, while the sum is 38.

The square root of 54345728 is about 7371.9555071907. The cubic root of 54345728 is about 378.7812476988.

The spelling of 54345728 in words is "fifty-four million, three hundred forty-five thousand, seven hundred twenty-eight".