23997770 has 16 divisors (see below), whose sum is σ = 43330248. Its totient is φ = 9569280.

The previous prime is 23997769. The next prime is 23997773. The reversal of 23997770 is 7779932.

It can be written as a sum of positive squares in 4 ways, for example, as 9259849 + 14737921 = 3043^2 + 3839^2 .

It is not an unprimeable number, because it can be changed into a prime (23997773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 191 + ... + 6930.

Almost surely, 2^23997770 is an apocalyptic number.

23997770 is a deficient number, since it is larger than the sum of its proper divisors (19332478).

23997770 is a wasteful number, since it uses less digits than its factorization.

23997770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7465.

The product of its (nonzero) digits is 166698, while the sum is 44.

The square root of 23997770 is about 4898.7518818573. The cubic root of 23997770 is about 288.4409798499.

The spelling of 23997770 in words is "twenty-three million, nine hundred ninety-seven thousand, seven hundred seventy".