23987428 has 12 divisors (see below), whose sum is σ = 43332352. Its totient is φ = 11606760.

The previous prime is 23987423. The next prime is 23987449. The reversal of 23987428 is 82478932.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (23987423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96600 + ... + 96847.

Almost surely, 2^23987428 is an apocalyptic number.

It is an amenable number.

23987428 is a deficient number, since it is larger than the sum of its proper divisors (19344924).

23987428 is a wasteful number, since it uses less digits than its factorization.

23987428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193482 (or 193480 counting only the distinct ones).

The product of its digits is 193536, while the sum is 43.

The square root of 23987428 is about 4897.6961931096. The cubic root of 23987428 is about 288.3995387044.

The spelling of 23987428 in words is "twenty-three million, nine hundred eighty-seven thousand, four hundred twenty-eight".