28948141 has 4 divisors (see below), whose sum is σ = 29881984. Its totient is φ = 28014300.

The previous prime is 28948133. The next prime is 28948163. The reversal of 28948141 is 14184982.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 28948141 - 2³ = 28948133 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28948141.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28948181) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 466875 + ... + 466936.

It is an arithmetic number, because the mean of its divisors is an integer number (7470496).

Almost surely, 2^28948141 is an apocalyptic number.

It is an amenable number.

28948141 is a deficient number, since it is larger than the sum of its proper divisors (933843).

28948141 is an equidigital number, since it uses as much as digits as its factorization.

28948141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 933842.

The product of its digits is 18432, while the sum is 37.

The square root of 28948141 is about 5380.3476653465. The cubic root of 28948141 is about 307.0484384943.

The spelling of 28948141 in words is "twenty-eight million, nine hundred forty-eight thousand, one hundred forty-one".