28194048 has 72 divisors (see below), whose sum is σ = 83395200. Its totient is φ = 9395712.

The previous prime is 28194011. The next prime is 28194059. The reversal of 28194048 is 84049182.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4873 + ... + 8951.

Almost surely, 2^28194048 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 28194048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41697600).

28194048 is an abundant number, since it is smaller than the sum of its proper divisors (55201152).

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

28194048 is an equidigital number, since it uses as much as digits as its factorization.

28194048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4104 (or 4084 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The square root of 28194048 is about 5309.8067761454. The cubic root of 28194048 is about 304.3587638826.

The spelling of 28194048 in words is "twenty-eight million, one hundred ninety-four thousand, forty-eight".