28198384 has 10 divisors (see below), whose sum is σ = 54634400. Its totient is φ = 14099184.

The previous prime is 28198381. The next prime is 28198421. The reversal of 28198384 is 48389182.

It is a super-2 number, since 2×28198384² = 1590297720422912, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28198384.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28198381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 881184 + ... + 881215.

It is an arithmetic number, because the mean of its divisors is an integer number (5463440).

Almost surely, 2^28198384 is an apocalyptic number.

It is an amenable number.

28198384 is a deficient number, since it is larger than the sum of its proper divisors (26436016).

28198384 is a wasteful number, since it uses less digits than its factorization.

28198384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1762407 (or 1762401 counting only the distinct ones).

The product of its digits is 110592, while the sum is 43.

The square root of 28198384 is about 5310.2150615582. The cubic root of 28198384 is about 304.3743656620.

It can be divided in two parts, 28198 and 384, that added together give a palindrome (28582).

The spelling of 28198384 in words is "twenty-eight million, one hundred ninety-eight thousand, three hundred eighty-four".