23002140 has 48 divisors (see below), whose sum is σ = 73608192. Its totient is φ = 5257536.

The previous prime is 23002127. The next prime is 23002151. The reversal of 23002140 is 4120032.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26964 + ... + 27803.

It is an arithmetic number, because the mean of its divisors is an integer number (1533504).

Almost surely, 2^23002140 is an apocalyptic number.

23002140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23002140 is an abundant number, since it is smaller than the sum of its proper divisors (50606052).

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

23002140 is a wasteful number, since it uses less digits than its factorization.

23002140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54786 (or 54784 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 23002140 is about 4796.0546285463. The cubic root of 23002140 is about 284.3955178208.

Adding to 23002140 its reverse (4120032), we get a palindrome (27122172).

The spelling of 23002140 in words is "twenty-three million, two thousand, one hundred forty".