28193120 has 24 divisors (see below), whose sum is σ = 66606624. Its totient is φ = 11277184.

The previous prime is 28193119. The next prime is 28193141. The reversal of 28193120 is 2139182.

It is a self number, because there is not a number n which added to its sum of digits gives 28193120.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87944 + ... + 88263.

It is an arithmetic number, because the mean of its divisors is an integer number (2775276).

Almost surely, 2^28193120 is an apocalyptic number.

28193120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28193120 is an abundant number, since it is smaller than the sum of its proper divisors (38413504).

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

28193120 is a wasteful number, since it uses less digits than its factorization.

28193120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176222 (or 176214 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 28193120 is about 5309.7193899490. The cubic root of 28193120 is about 304.3554245485.

The spelling of 28193120 in words is "twenty-eight million, one hundred ninety-three thousand, one hundred twenty".