23142320 has 40 divisors (see below), whose sum is σ = 54009936. Its totient is φ = 9221888.

The previous prime is 23142313. The next prime is 23142331. The reversal of 23142320 is 2324132.

23142320 = 298² + 299² + ... + 457².

It is a tau number, because it is divible by the number of its divisors (40).

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, 35114 + ... + 35766.

Almost surely, 2^23142320 is an apocalyptic number.

23142320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23142320 is an abundant number, since it is smaller than the sum of its proper divisors (30867616).

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

23142320 is a wasteful number, since it uses less digits than its factorization.

23142320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1109 (or 1103 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 23142320 is about 4810.6465261958. The cubic root of 23142320 is about 284.9720707216.

Adding to 23142320 its reverse (2324132), we get a palindrome (25466452).

The spelling of 23142320 in words is "twenty-three million, one hundred forty-two thousand, three hundred twenty".