23472540 has 144 divisors (see below), whose sum is σ = 87691968. Its totient is φ = 4948992.

The previous prime is 23472499. The next prime is 23472551. The reversal of 23472540 is 4527432.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 15664 + ... + 17096.

It is an arithmetic number, because the mean of its divisors is an integer number (608972).

Almost surely, 2^23472540 is an apocalyptic number.

23472540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23472540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43845984).

23472540 is an abundant number, since it is smaller than the sum of its proper divisors (64219428).

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

23472540 is a wasteful number, since it uses less digits than its factorization.

23472540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1468 (or 1463 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 27.

The square root of 23472540 is about 4844.8467468022. The cubic root of 23472540 is about 286.3211057568.

Adding to 23472540 its reverse (4527432), we get a palindrome (27999972).

The spelling of 23472540 in words is "twenty-three million, four hundred seventy-two thousand, five hundred forty".