23240516 has 12 divisors (see below), whose sum is σ = 43799532. Its totient is φ = 10726368.

The previous prime is 23240473. The next prime is 23240519. The reversal of 23240516 is 61504232.

It can be written as a sum of positive squares in 2 ways, for example, as 1188100 + 22052416 = 1090^2 + 4696^2 .

It is a junction number, because it is equal to n+sod(n) for n = 23240491 and 23240500.

It is not an unprimeable number, because it can be changed into a prime (23240519) 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, 223415 + ... + 223518.

It is an arithmetic number, because the mean of its divisors is an integer number (3649961).

Almost surely, 2^23240516 is an apocalyptic number.

23240516 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

23240516 is a deficient number, since it is larger than the sum of its proper divisors (20559016).

23240516 is a wasteful number, since it uses less digits than its factorization.

23240516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446950 (or 446948 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 23240516 is about 4820.8418351985. The cubic root of 23240516 is about 285.3745603563.

Adding to 23240516 its reverse (61504232), we get a palindrome (84744748).

The spelling of 23240516 in words is "twenty-three million, two hundred forty thousand, five hundred sixteen".