54217728 has 176 divisors, whose sum is σ = 168017760. Its totient is φ = 17252352.

The previous prime is 54217721. The next prime is 54217747. The reversal of 54217728 is 82771245.

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 = 54217692 and 54217701.

It is not an unprimeable number, because it can be changed into a prime (54217721) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1022950 + ... + 1023002.

Almost surely, 2^54217728 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 54217728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84008880).

54217728 is an abundant number, since it is smaller than the sum of its proper divisors (113800032).

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

54217728 is a wasteful number, since it uses less digits than its factorization.

54217728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119 (or 95 counting only the distinct ones).

The product of its digits is 31360, while the sum is 36.

The square root of 54217728 is about 7363.2688393131. The cubic root of 54217728 is about 378.4836339088.

It can be divided in two parts, 54217 and 728, that added together give a palindrome (54945).

The spelling of 54217728 in words is "fifty-four million, two hundred seventeen thousand, seven hundred twenty-eight".