23430140 has 24 divisors (see below), whose sum is σ = 49759920. Its totient is φ = 9266048.

The previous prime is 23430133. The next prime is 23430157. The reversal of 23430140 is 4103432.

It is a congruent number.

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, 4802 + ... + 8361.

It is an arithmetic number, because the mean of its divisors is an integer number (2073330).

Almost surely, 2^23430140 is an apocalyptic number.

23430140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23430140 is an abundant number, since it is smaller than the sum of its proper divisors (26329780).

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

23430140 is a wasteful number, since it uses less digits than its factorization.

23430140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13261 (or 13259 counting only the distinct ones).

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

The square root of 23430140 is about 4840.4689855426. The cubic root of 23430140 is about 286.1486016023.

Adding to 23430140 its reverse (4103432), we get a palindrome (27533572).

The spelling of 23430140 in words is "twenty-three million, four hundred thirty thousand, one hundred forty".