24228613 has 6 divisors (see below), whose sum is σ = 24531014. Its totient is φ = 23929896.

The previous prime is 24228593. The next prime is 24228643. The reversal of 24228613 is 31682242.

It can be written as a sum of positive squares in only one way, i.e., 23980609 + 248004 = 4897^2 + 498^2 .

It is a de Polignac number, because none of the positive numbers 2^k-24228613 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 (24228643) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5131 + ... + 8647.

Almost surely, 2^24228613 is an apocalyptic number.

It is an amenable number.

24228613 is a deficient number, since it is larger than the sum of its proper divisors (302401).

24228613 is an frugal number, since it uses more digits than its factorization.

24228613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3683 (or 3600 counting only the distinct ones).

The product of its digits is 4608, while the sum is 28.

The square root of 24228613 is about 4922.2569010567. The cubic root of 24228613 is about 289.3629018262.

The spelling of 24228613 in words is "twenty-four million, two hundred twenty-eight thousand, six hundred thirteen".