23132340 has 144 divisors (see below), whose sum is σ = 87534720. Its totient is φ = 4803840.

The previous prime is 23132311. The next prime is 23132371. The reversal of 23132340 is 4323132.

It is a Harshad number since it is a multiple of its sum of digits (18).

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, 13026 + ... + 14694.

It is an arithmetic number, because the mean of its divisors is an integer number (607880).

Almost surely, 2^23132340 is an apocalyptic number.

23132340 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 23132340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43767360).

23132340 is an abundant number, since it is smaller than the sum of its proper divisors (64402380).

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

23132340 is a wasteful number, since it uses less digits than its factorization.

23132340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1702 (or 1697 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 23132340 is about 4809.6091317279. The cubic root of 23132340 is about 284.9311006116.

Adding to 23132340 its reverse (4323132), we get a palindrome (27455472).

The spelling of 23132340 in words is "twenty-three million, one hundred thirty-two thousand, three hundred forty".