28744192 has 40 divisors (see below), whose sum is σ = 59317632. Its totient is φ = 13900800.

The previous prime is 28744141. The next prime is 28744193. The reversal of 28744192 is 29144782.

It is not an unprimeable number, because it can be changed into a prime (28744193) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14967 + ... + 16777.

Almost surely, 2^28744192 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 28744192, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29658816).

28744192 is an abundant number, since it is smaller than the sum of its proper divisors (30573440).

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

28744192 is an equidigital number, since it uses as much as digits as its factorization.

28744192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1860 (or 1844 counting only the distinct ones).

The product of its digits is 32256, while the sum is 37.

The square root of 28744192 is about 5361.3610212333. The cubic root of 28744192 is about 306.3256532798.

The spelling of 28744192 in words is "twenty-eight million, seven hundred forty-four thousand, one hundred ninety-two".