28193574 has 16 divisors (see below), whose sum is σ = 56704320. Its totient is φ = 9345000.

The previous prime is 28193569. The next prime is 28193579. The reversal of 28193574 is 47539182.

It is an interprime number because it is at equal distance from previous prime (28193569) and next prime (28193579).

It is a super-2 number, since 2×28193574² = 1589755229786952, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28193579) 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 in 7 ways as a sum of consecutive naturals, for example, 12052 + ... + 14199.

It is an arithmetic number, because the mean of its divisors is an integer number (3544020).

Almost surely, 2^28193574 is an apocalyptic number.

28193574 is an abundant number, since it is smaller than the sum of its proper divisors (28510746).

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

28193574 is a wasteful number, since it uses less digits than its factorization.

28193574 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26435.

The product of its digits is 60480, while the sum is 39.

The square root of 28193574 is about 5309.7621415653. The cubic root of 28193574 is about 304.3570582405.

The spelling of 28193574 in words is "twenty-eight million, one hundred ninety-three thousand, five hundred seventy-four".