23797640 has 32 divisors (see below), whose sum is σ = 55874880. Its totient is φ = 9104832.

The previous prime is 23797639. The next prime is 23797649. The reversal of 23797640 is 4679732.

It is a junction number, because it is equal to n+sod(n) for n = 23797594 and 23797603.

It is not an unprimeable number, because it can be changed into a prime (23797649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12014 + ... + 13853.

It is an arithmetic number, because the mean of its divisors is an integer number (1746090).

Almost surely, 2^23797640 is an apocalyptic number.

23797640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23797640 is an abundant number, since it is smaller than the sum of its proper divisors (32077240).

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

23797640 is a wasteful number, since it uses less digits than its factorization.

23797640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25901 (or 25897 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 38.

The square root of 23797640 is about 4878.2824846456. The cubic root of 23797640 is about 287.6369202894.

The spelling of 23797640 in words is "twenty-three million, seven hundred ninety-seven thousand, six hundred forty".