24772213 has 6 divisors (see below), whose sum is σ = 26315426. Its totient is φ = 23314752.

The previous prime is 24772211. The next prime is 24772217. The reversal of 24772213 is 31227742.

It can be written as a sum of positive squares in 3 ways, for example, as 6265009 + 18507204 = 2503^2 + 4302^2 .

It is not a de Polignac number, because 24772213 - 2¹ = 24772211 is a prime.

It is a super-2 number, since 2×24772213² = 1227325073834738, 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 (24772211) 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, 42570 + ... + 43147.

Almost surely, 2^24772213 is an apocalyptic number.

It is an amenable number.

24772213 is a deficient number, since it is larger than the sum of its proper divisors (1543213).

24772213 is an equidigital number, since it uses as much as digits as its factorization.

24772213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85751 (or 85734 counting only the distinct ones).

The product of its digits is 4704, while the sum is 28.

The square root of 24772213 is about 4977.1691753446. The cubic root of 24772213 is about 291.5109918997.

Adding to 24772213 its reverse (31227742), we get a palindrome (55999955).

The spelling of 24772213 in words is "twenty-four million, seven hundred seventy-two thousand, two hundred thirteen".