23220352 has 16 divisors (see below), whose sum is σ = 46259550. Its totient is φ = 11610112.

The previous prime is 23220347. The next prime is 23220361. The reversal of 23220352 is 25302232.

It can be written as a sum of positive squares in only one way, i.e., 13133376 + 10086976 = 3624^2 + 3176^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90577 + ... + 90832.

Almost surely, 2^23220352 is an apocalyptic number.

It is an amenable number.

23220352 is a deficient number, since it is larger than the sum of its proper divisors (23039198).

23220352 is an equidigital number, since it uses as much as digits as its factorization.

23220352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181423 (or 181411 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 19.

The square root of 23220352 is about 4818.7500453956. The cubic root of 23220352 is about 285.2920039905.

Adding to 23220352 its reverse (25302232), we get a palindrome (48522584).

The spelling of 23220352 in words is "twenty-three million, two hundred twenty thousand, three hundred fifty-two".