23272129 has 4 divisors (see below), whose sum is σ = 23498176. Its totient is φ = 23046084.

The previous prime is 23272127. The next prime is 23272157. The reversal of 23272129 is 92127232.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 23272129 - 2¹ = 23272127 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23272097 and 23272106.

It is not an unprimeable number, because it can be changed into a prime (23272127) 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, 112869 + ... + 113074.

It is an arithmetic number, because the mean of its divisors is an integer number (5874544).

Almost surely, 2^23272129 is an apocalyptic number.

It is an amenable number.

23272129 is a deficient number, since it is larger than the sum of its proper divisors (226047).

23272129 is a wasteful number, since it uses less digits than its factorization.

23272129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226046.

The product of its digits is 3024, while the sum is 28.

The square root of 23272129 is about 4824.1195051532. The cubic root of 23272129 is about 285.5038956737.

It can be divided in two parts, 232 and 72129, that added together give a square (72361 = 269²).

The spelling of 23272129 in words is "twenty-three million, two hundred seventy-two thousand, one hundred twenty-nine".