23132040 has 32 divisors (see below), whose sum is σ = 69396480. Its totient is φ = 6168512.

The previous prime is 23132029. The next prime is 23132041. The reversal of 23132040 is 4023132.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (23132041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96264 + ... + 96503.

It is an arithmetic number, because the mean of its divisors is an integer number (2168640).

Almost surely, 2^23132040 is an apocalyptic number.

23132040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23132040 is an abundant number, since it is smaller than the sum of its proper divisors (46264440).

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

23132040 is a wasteful number, since it uses less digits than its factorization.

23132040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192781 (or 192777 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 23132040 is about 4809.5779440612. The cubic root of 23132040 is about 284.9298688628.

Adding to 23132040 its reverse (4023132), we get a palindrome (27155172).

The spelling of 23132040 in words is "twenty-three million, one hundred thirty-two thousand, forty".