28180341 has 18 divisors (see below), whose sum is σ = 47351382. Its totient is φ = 16102800.

The previous prime is 28180319. The next prime is 28180357. The reversal of 28180341 is 14308182.

It can be written as a sum of positive squares in only one way, i.e., 27783441 + 396900 = 5271^2 + 630^2 .

It is not a de Polignac number, because 28180341 - 2⁵ = 28180309 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28180381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 31510 + ... + 32391.

Almost surely, 2^28180341 is an apocalyptic number.

28180341 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

28180341 is a deficient number, since it is larger than the sum of its proper divisors (19171041).

28180341 is a wasteful number, since it uses less digits than its factorization.

28180341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63921 (or 63911 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 28180341 is about 5308.5158942966. The cubic root of 28180341 is about 304.3094328816.

The spelling of 28180341 in words is "twenty-eight million, one hundred eighty thousand, three hundred forty-one".