23421554 has 16 divisors (see below), whose sum is σ = 39056640. Its totient is φ = 10460880.

The previous prime is 23421533. The next prime is 23421569. The reversal of 23421554 is 45512432.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13724 + ... + 15335.

It is an arithmetic number, because the mean of its divisors is an integer number (2441040).

Almost surely, 2^23421554 is an apocalyptic number.

23421554 is a deficient number, since it is larger than the sum of its proper divisors (15635086).

23421554 is a wasteful number, since it uses less digits than its factorization.

23421554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29105.

The product of its digits is 4800, while the sum is 26.

The square root of 23421554 is about 4839.5820067440. The cubic root of 23421554 is about 286.1136441776.

Adding to 23421554 its reverse (45512432), we get a palindrome (68933986).

The spelling of 23421554 in words is "twenty-three million, four hundred twenty-one thousand, five hundred fifty-four".