28741149 has 10 divisors (see below), whose sum is σ = 42934430. Its totient is φ = 19160712.

The previous prime is 28741133. The next prime is 28741177. The reversal of 28741149 is 94114782.

It can be written as a sum of positive squares in only one way, i.e., 26316900 + 2424249 = 5130^2 + 1557^2 .

It is not a de Polignac number, because 28741149 - 2⁴ = 28741133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28741109) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 177334 + ... + 177495.

It is an arithmetic number, because the mean of its divisors is an integer number (4293443).

Almost surely, 2^28741149 is an apocalyptic number.

It is an amenable number.

28741149 is a deficient number, since it is larger than the sum of its proper divisors (14193281).

28741149 is an equidigital number, since it uses as much as digits as its factorization.

28741149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 354841 (or 354832 counting only the distinct ones).

The product of its digits is 16128, while the sum is 36.

The square root of 28741149 is about 5361.0772238422. The cubic root of 28741149 is about 306.3148431903.

The spelling of 28741149 in words is "twenty-eight million, seven hundred forty-one thousand, one hundred forty-nine".