23004340 has 12 divisors (see below), whose sum is σ = 48309156. Its totient is φ = 9201728.

The previous prime is 23004313. The next prime is 23004379. The reversal of 23004340 is 4340032.

It can be written as a sum of positive squares in 2 ways, for example, as 7606564 + 15397776 = 2758^2 + 3924^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 575089 + ... + 575128.

It is an arithmetic number, because the mean of its divisors is an integer number (4025763).

Almost surely, 2^23004340 is an apocalyptic number.

23004340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23004340 is an abundant number, since it is smaller than the sum of its proper divisors (25304816).

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

23004340 is a wasteful number, since it uses less digits than its factorization.

23004340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1150226 (or 1150224 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 16.

The square root of 23004340 is about 4796.2839782482. The cubic root of 23004340 is about 284.4045843713.

Adding to 23004340 its reverse (4340032), we get a palindrome (27344372).

The spelling of 23004340 in words is "twenty-three million, four thousand, three hundred forty".