54138028 has 48 divisors (see below), whose sum is σ = 113096704. Its totient is φ = 22187520.

The previous prime is 54138001. The next prime is 54138037. The reversal of 54138028 is 82083145.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83875 + ... + 84517.

Almost surely, 2^54138028 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 54138028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56548352).

54138028 is an abundant number, since it is smaller than the sum of its proper divisors (58958676).

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

54138028 is a wasteful number, since it uses less digits than its factorization.

54138028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 782 (or 780 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 31.

The square root of 54138028 is about 7357.8548504303. The cubic root of 54138028 is about 378.2980861201.

The spelling of 54138028 in words is "fifty-four million, one hundred thirty-eight thousand, twenty-eight".