24242213 has 4 divisors (see below), whose sum is σ = 24396780. Its totient is φ = 24087648.

The previous prime is 24242189. The next prime is 24242219. The reversal of 24242213 is 31224242.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6543364 + 17698849 = 2558^2 + 4207^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-24242213 is a prime.

It is a super-2 number, since 2×24242213² = 1175369782274738, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (24242219) 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, 77048 + ... + 77361.

It is an arithmetic number, because the mean of its divisors is an integer number (6099195).

Almost surely, 2^24242213 is an apocalyptic number.

It is an amenable number.

24242213 is a deficient number, since it is larger than the sum of its proper divisors (154567).

24242213 is a wasteful number, since it uses less digits than its factorization.

24242213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154566.

The product of its digits is 768, while the sum is 20.

The square root of 24242213 is about 4923.6381873570. The cubic root of 24242213 is about 289.4170334070.

Adding to 24242213 its reverse (31224242), we get a palindrome (55466455).

The spelling of 24242213 in words is "twenty-four million, two hundred forty-two thousand, two hundred thirteen".