23220370 has 16 divisors (see below), whose sum is σ = 42168600. Its totient is φ = 9205504.

The previous prime is 23220361. The next prime is 23220377. The reversal of 23220370 is 7302232.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 18515809 + 4704561 = 4303^2 + 2169^2 .

It is not an unprimeable number, because it can be changed into a prime (23220377) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9145 + ... + 11404.

Almost surely, 2^23220370 is an apocalyptic number.

23220370 is a deficient number, since it is larger than the sum of its proper divisors (18948230).

23220370 is a wasteful number, since it uses less digits than its factorization.

23220370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20669.

The product of its (nonzero) digits is 504, while the sum is 19.

The square root of 23220370 is about 4818.7519130995. The cubic root of 23220370 is about 285.2920777082.

It can be divided in two parts, 232 and 20370, that added together give a palindrome (20602).

The spelling of 23220370 in words is "twenty-three million, two hundred twenty thousand, three hundred seventy".