28095144 has 128 divisors (see below), whose sum is σ = 91514880. Its totient is φ = 6969600.

The previous prime is 28095131. The next prime is 28095149. The reversal of 28095144 is 44159082.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (28095149) 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, 42174 + ... + 42834.

It is an arithmetic number, because the mean of its divisors is an integer number (714960).

Almost surely, 2^28095144 is an apocalyptic number.

28095144 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28095144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45757440).

28095144 is an abundant number, since it is smaller than the sum of its proper divisors (63419736).

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

28095144 is a wasteful number, since it uses less digits than its factorization.

28095144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 711 (or 707 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 28095144 is about 5300.4852608040. The cubic root of 28095144 is about 304.0024526580.

The spelling of 28095144 in words is "twenty-eight million, ninety-five thousand, one hundred forty-four".