23969990 has 16 divisors (see below), whose sum is σ = 47068560. Its totient is φ = 8716320.

The previous prime is 23969971. The next prime is 23969993. The reversal of 23969990 is 9996932.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23969993) 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, 108845 + ... + 109064.

It is an arithmetic number, because the mean of its divisors is an integer number (2941785).

Almost surely, 2^23969990 is an apocalyptic number.

23969990 is a deficient number, since it is larger than the sum of its proper divisors (23098570).

23969990 is a wasteful number, since it uses less digits than its factorization.

23969990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217927.

The product of its (nonzero) digits is 236196, while the sum is 47.

The square root of 23969990 is about 4895.9156446981. The cubic root of 23969990 is about 288.3296363885.

The spelling of 23969990 in words is "twenty-three million, nine hundred sixty-nine thousand, nine hundred ninety".