23140455 has 16 divisors (see below), whose sum is σ = 39873120. Its totient is φ = 11392128.

The previous prime is 23140433. The next prime is 23140501. The reversal of 23140455 is 55404132.

It is not a de Polignac number, because 23140455 - 2⁸ = 23140199 is a prime.

It is a congruent number.

It is an unprimeable number.

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, 59140 + ... + 59529.

It is an arithmetic number, because the mean of its divisors is an integer number (2492070).

Almost surely, 2^23140455 is an apocalyptic number.

23140455 is a deficient number, since it is larger than the sum of its proper divisors (16732665).

23140455 is a wasteful number, since it uses less digits than its factorization.

23140455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118690.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 23140455 is about 4810.4526814012. The cubic root of 23140455 is about 284.9644153786.

Adding to 23140455 its reverse (55404132), we get a palindrome (78544587).

The spelling of 23140455 in words is "twenty-three million, one hundred forty thousand, four hundred fifty-five".