24157989 has 12 divisors (see below), whose sum is σ = 35416576. Its totient is φ = 15864552.

The previous prime is 24157967. The next prime is 24157999. The reversal of 24157989 is 98975142.

It is not a de Polignac number, because 24157989 - 2¹¹ = 24155941 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (24157999) 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 11 ways as a sum of consecutive naturals, for example, 19429 + ... + 20634.

Almost surely, 2^24157989 is an apocalyptic number.

It is an amenable number.

24157989 is a deficient number, since it is larger than the sum of its proper divisors (11258587).

24157989 is a wasteful number, since it uses less digits than its factorization.

24157989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40136 (or 40133 counting only the distinct ones).

The product of its digits is 181440, while the sum is 45.

The square root of 24157989 is about 4915.0777206469. The cubic root of 24157989 is about 289.0814734992.

It can be divided in two parts, 2415 and 7989, that added together give a square (10404 = 102²).

The spelling of 24157989 in words is "twenty-four million, one hundred fifty-seven thousand, nine hundred eighty-nine".