23445490 has 16 divisors (see below), whose sum is σ = 42309720. Its totient is φ = 9354240.

The previous prime is 23445467. The next prime is 23445491. The reversal of 23445490 is 9454432.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 6953769 + 16491721 = 2637^2 + 4061^2 .

It is not an unprimeable number, because it can be changed into a prime (23445491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1426 + ... + 6994.

Almost surely, 2^23445490 is an apocalyptic number.

23445490 is a deficient number, since it is larger than the sum of its proper divisors (18864230).

23445490 is a wasteful number, since it uses less digits than its factorization.

23445490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5997.

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 23445490 is about 4842.0543160935. The cubic root of 23445490 is about 286.2110770033.

The spelling of 23445490 in words is "twenty-three million, four hundred forty-five thousand, four hundred ninety".