28744461 has 12 divisors (see below), whose sum is σ = 41569788. Its totient is φ = 19139904.

The previous prime is 28744459. The next prime is 28744487. The reversal of 28744461 is 16444782.

It can be written as a sum of positive squares in 2 ways, for example, as 2673225 + 26071236 = 1635^2 + 5106^2 .

It is not a de Polignac number, because 28744461 - 2¹ = 28744459 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28744361) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9601 + ... + 12233.

It is an arithmetic number, because the mean of its divisors is an integer number (3464149).

Almost surely, 2^28744461 is an apocalyptic number.

It is an amenable number.

28744461 is a deficient number, since it is larger than the sum of its proper divisors (12825327).

28744461 is a wasteful number, since it uses less digits than its factorization.

28744461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3852 (or 3849 counting only the distinct ones).

The product of its digits is 43008, while the sum is 36.

The square root of 28744461 is about 5361.3861080881. The cubic root of 28744461 is about 306.3266088507.

The spelling of 28744461 in words is "twenty-eight million, seven hundred forty-four thousand, four hundred sixty-one".