23538040 has 32 divisors (see below), whose sum is σ = 53142480. Its totient is φ = 9382912.

The previous prime is 23538037. The next prime is 23538041. The reversal of 23538040 is 4083532.

It is a junction number, because it is equal to n+sod(n) for n = 23537996 and 23538014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23538041) 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, 13287 + ... + 14953.

Almost surely, 2^23538040 is an apocalyptic number.

23538040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23538040 is an abundant number, since it is smaller than the sum of its proper divisors (29604440).

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

23538040 is a wasteful number, since it uses less digits than its factorization.

23538040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2031 (or 2027 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 23538040 is about 4851.6017973449. The cubic root of 23538040 is about 286.5871842621.

The spelling of 23538040 in words is "twenty-three million, five hundred thirty-eight thousand, forty".