23030140 has 48 divisors (see below), whose sum is σ = 55641600. Its totient is φ = 7843392.

The previous prime is 23030131. The next prime is 23030167. The reversal of 23030140 is 4103032.

It is a self number, because there is not a number n which added to its sum of digits gives 23030140.

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, 24601 + ... + 25519.

It is an arithmetic number, because the mean of its divisors is an integer number (1159200).

Almost surely, 2^23030140 is an apocalyptic number.

23030140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23030140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27820800).

23030140 is an abundant number, since it is smaller than the sum of its proper divisors (32611460).

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

23030140 is a wasteful number, since it uses less digits than its factorization.

23030140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1114 (or 1112 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 23030140 is about 4798.9728067577. The cubic root of 23030140 is about 284.5108671693.

Adding to 23030140 its reverse (4103032), we get a palindrome (27133172).

The spelling of 23030140 in words is "twenty-three million, thirty thousand, one hundred forty".