23400455 has 8 divisors (see below), whose sum is σ = 30240672. Its totient is φ = 17280288.

The previous prime is 23400451. The next prime is 23400469. The reversal of 23400455 is 55400432.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23400455 - 2² = 23400451 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23400455.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23400451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 179939 + ... + 180068.

It is an arithmetic number, because the mean of its divisors is an integer number (3780084).

Almost surely, 2^23400455 is an apocalyptic number.

23400455 is a deficient number, since it is larger than the sum of its proper divisors (6840217).

23400455 is a wasteful number, since it uses less digits than its factorization.

23400455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360025.

The product of its (nonzero) digits is 2400, while the sum is 23.

The square root of 23400455 is about 4837.4016785874. The cubic root of 23400455 is about 286.0277044576.

Subtracting from 23400455 its sum of digits (23), we obtain a palindrome (23400432).

Adding to 23400455 its reverse (55400432), we get a palindrome (78800887).

The spelling of 23400455 in words is "twenty-three million, four hundred thousand, four hundred fifty-five".