23828649 has 16 divisors (see below), whose sum is σ = 34524672. Its totient is φ = 14531328.

The previous prime is 23828639. The next prime is 23828653. The reversal of 23828649 is 94682832.

It is not a de Polignac number, because 23828649 - 2¹² = 23824553 is a prime.

It is a super-3 number, since 3×23828649³ (a number of 23 digits) contains 333 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 23828649.

It is not an unprimeable number, because it can be changed into a prime (23828639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1704 + ... + 7110.

It is an arithmetic number, because the mean of its divisors is an integer number (2157792).

Almost surely, 2^23828649 is an apocalyptic number.

It is an amenable number.

23828649 is a deficient number, since it is larger than the sum of its proper divisors (10696023).

23828649 is a wasteful number, since it uses less digits than its factorization.

23828649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5536.

The product of its digits is 165888, while the sum is 42.

The square root of 23828649 is about 4881.4597202067. The cubic root of 23828649 is about 287.7617990871.

The spelling of 23828649 in words is "twenty-three million, eight hundred twenty-eight thousand, six hundred forty-nine".