28350144 has 84 divisors (see below), whose sum is σ = 82378296. Its totient is φ = 9320448.

The previous prime is 28350143. The next prime is 28350173. The reversal of 28350144 is 44105382.

It is not an unprimeable number, because it can be changed into a prime (28350143) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 47512 + ... + 48104.

It is an arithmetic number, because the mean of its divisors is an integer number (980694).

Almost surely, 2^28350144 is an apocalyptic number.

28350144 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 28350144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41189148).

28350144 is an abundant number, since it is smaller than the sum of its proper divisors (54028152).

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

28350144 is a wasteful number, since it uses less digits than its factorization.

28350144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 694 (or 681 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 28350144 is about 5324.4853272406. The cubic root of 28350144 is about 304.9194233084.

The spelling of 28350144 in words is "twenty-eight million, three hundred fifty thousand, one hundred forty-four".