23513340 has 24 divisors (see below), whose sum is σ = 65837520. Its totient is φ = 6270208.

The previous prime is 23513339. The next prime is 23513351. The reversal of 23513340 is 4331532.

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, 195885 + ... + 196004.

It is an arithmetic number, because the mean of its divisors is an integer number (2743230).

Almost surely, 2^23513340 is an apocalyptic number.

23513340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23513340 is an abundant number, since it is smaller than the sum of its proper divisors (42324180).

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

23513340 is a wasteful number, since it uses less digits than its factorization.

23513340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391901 (or 391899 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 21.

The square root of 23513340 is about 4849.0555781513. The cubic root of 23513340 is about 286.4869043047.

Adding to 23513340 its reverse (4331532), we get a palindrome (27844872).

The spelling of 23513340 in words is "twenty-three million, five hundred thirteen thousand, three hundred forty".