23421153 has 16 divisors (see below), whose sum is σ = 37241856. Its totient is φ = 12801360.

The previous prime is 23421149. The next prime is 23421169. The reversal of 23421153 is 35112432.

It is not a de Polignac number, because 23421153 - 2² = 23421149 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (23421113) 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 15 ways as a sum of consecutive naturals, for example, 23763 + ... + 24728.

It is an arithmetic number, because the mean of its divisors is an integer number (2327616).

Almost surely, 2^23421153 is an apocalyptic number.

23421153 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

23421153 is a deficient number, since it is larger than the sum of its proper divisors (13820703).

23421153 is a wasteful number, since it uses less digits than its factorization.

23421153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48524.

The product of its digits is 720, while the sum is 21.

The square root of 23421153 is about 4839.5405773689. The cubic root of 23421153 is about 286.1120113195.

Adding to 23421153 its reverse (35112432), we get a palindrome (58533585).

The spelling of 23421153 in words is "twenty-three million, four hundred twenty-one thousand, one hundred fifty-three".