23224340 has 12 divisors (see below), whose sum is σ = 48771156. Its totient is φ = 9289728.

The previous prime is 23224309. The next prime is 23224351. The reversal of 23224340 is 4342232.

It can be written as a sum of positive squares in 2 ways, for example, as 10163344 + 13060996 = 3188^2 + 3614^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 1161217 = 23224340 / (2 + 3 + 2 + 2 + 4 + 3 + 4 + 0).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 580589 + ... + 580628.

It is an arithmetic number, because the mean of its divisors is an integer number (4064263).

Almost surely, 2^23224340 is an apocalyptic number.

23224340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23224340 is an abundant number, since it is smaller than the sum of its proper divisors (25546816).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23224340 is a wasteful number, since it uses less digits than its factorization.

23224340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1161226 (or 1161224 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 20.

The square root of 23224340 is about 4819.1638278855. The cubic root of 23224340 is about 285.3083356319.

Adding to 23224340 its reverse (4342232), we get a palindrome (27566572).

The spelling of 23224340 in words is "twenty-three million, two hundred twenty-four thousand, three hundred forty".