54187128 has 48 divisors (see below), whose sum is σ = 147771000. Its totient is φ = 17937600.

The previous prime is 54187123. The next prime is 54187139. The reversal of 54187128 is 82178145.

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 = 54187092 and 54187101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54187123) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8203 + ... + 13253.

Almost surely, 2^54187128 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 54187128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73885500).

54187128 is an abundant number, since it is smaller than the sum of its proper divisors (93583872).

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

54187128 is a wasteful number, since it uses less digits than its factorization.

54187128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5212 (or 5205 counting only the distinct ones).

The product of its digits is 17920, while the sum is 36.

The square root of 54187128 is about 7361.1906645596. The cubic root of 54187128 is about 378.4124162514.

The spelling of 54187128 in words is "fifty-four million, one hundred eighty-seven thousand, one hundred twenty-eight".