23143638 has 16 divisors (see below), whose sum is σ = 52899840. Its totient is φ = 6612456.

The previous prime is 23143607. The next prime is 23143667. The reversal of 23143638 is 83634132.

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 7 ways as a sum of consecutive naturals, for example, 275478 + ... + 275561.

It is an arithmetic number, because the mean of its divisors is an integer number (3306240).

Almost surely, 2^23143638 is an apocalyptic number.

23143638 is an abundant number, since it is smaller than the sum of its proper divisors (29756202).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23143638 is a wasteful number, since it uses less digits than its factorization.

23143638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 551051.

The product of its digits is 10368, while the sum is 30.

The square root of 23143638 is about 4810.7835120695. The cubic root of 23143638 is about 284.9774805229.

The spelling of 23143638 in words is "twenty-three million, one hundred forty-three thousand, six hundred thirty-eight".