23453649 has 12 divisors (see below), whose sum is σ = 33922356. Its totient is φ = 15615072.

The previous prime is 23453641. The next prime is 23453653. The reversal of 23453649 is 94635432.

23453649 is a `hidden beast` number, since 2 + 3 + 4 + 5 + 3 + 649 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 3873024 + 19580625 = 1968^2 + 4425^2 .

It is not a de Polignac number, because 23453649 - 2³ = 23453641 is a prime.

It is a super-4 number, since 4×23453649⁴ (a number of 31 digits) contains 4444 as substring. Note that it is a super-d number also for d = 3.

It is not an unprimeable number, because it can be changed into a prime (23453641) 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, 8887 + ... + 11219.

It is an arithmetic number, because the mean of its divisors is an integer number (2826863).

Almost surely, 2^23453649 is an apocalyptic number.

It is an amenable number.

23453649 is a deficient number, since it is larger than the sum of its proper divisors (10468707).

23453649 is a wasteful number, since it uses less digits than its factorization.

23453649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3456 (or 3453 counting only the distinct ones).

The product of its digits is 77760, while the sum is 36.

The square root of 23453649 is about 4842.8967571073. The cubic root of 23453649 is about 286.2442735136.

The spelling of 23453649 in words is "twenty-three million, four hundred fifty-three thousand, six hundred forty-nine".