28054404 has 96 divisors (see below), whose sum is σ = 85155840. Its totient is φ = 7820064.

The previous prime is 28054387. The next prime is 28054409. The reversal of 28054404 is 40445082.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (28054409) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32077 + ... + 32939.

It is an arithmetic number, because the mean of its divisors is an integer number (887040).

Almost surely, 2^28054404 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 28054404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42577920).

28054404 is an abundant number, since it is smaller than the sum of its proper divisors (57101436).

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

28054404 is a wasteful number, since it uses less digits than its factorization.

28054404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 926 (or 918 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 27.

The square root of 28054404 is about 5296.6408222571. The cubic root of 28054404 is about 303.8554396942.

Adding to 28054404 its reverse (40445082), we get a palindrome (68499486).

The spelling of 28054404 in words is "twenty-eight million, fifty-four thousand, four hundred four".