28160340 has 96 divisors (see below), whose sum is σ = 86177280. Its totient is φ = 6829056.

The previous prime is 28160329. The next prime is 28160351. The reversal of 28160340 is 4306182.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (28160329) and next prime (28160351).

It is a self number, because there is not a number n which added to its sum of digits gives 28160340.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 61392 + ... + 61848.

It is an arithmetic number, because the mean of its divisors is an integer number (897680).

Almost surely, 2^28160340 is an apocalyptic number.

28160340 is a gapful number since it is divisible by the number (20) 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 28160340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43088640).

28160340 is an abundant number, since it is smaller than the sum of its proper divisors (58016940).

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

28160340 is a wasteful number, since it uses less digits than its factorization.

28160340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 561 (or 559 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 28160340 is about 5306.6317000523. The cubic root of 28160340 is about 304.2374212914.

The spelling of 28160340 in words is "twenty-eight million, one hundred sixty thousand, three hundred forty".