23728929 has 16 divisors (see below), whose sum is σ = 38062080. Its totient is φ = 12845520.

The previous prime is 23728927. The next prime is 23728949. The reversal of 23728929 is 92982732.

It is not a de Polignac number, because 23728929 - 2¹ = 23728927 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (23728927) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29337 + ... + 30134.

It is an arithmetic number, because the mean of its divisors is an integer number (2378880).

Almost surely, 2^23728929 is an apocalyptic number.

It is an amenable number.

23728929 is a deficient number, since it is larger than the sum of its proper divisors (14333151).

23728929 is a wasteful number, since it uses less digits than its factorization.

23728929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59500.

The product of its digits is 108864, while the sum is 42.

The square root of 23728929 is about 4871.2348537101. The cubic root of 23728929 is about 287.3598217706.

The spelling of 23728929 in words is "twenty-three million, seven hundred twenty-eight thousand, nine hundred twenty-nine".