23432040 has 48 divisors (see below), whose sum is σ = 76155300. Its totient is φ = 6248448.

The previous prime is 23432023. The next prime is 23432047. The reversal of 23432040 is 4023432.

It can be written as a sum of positive squares in 2 ways, for example, as 21511044 + 1920996 = 4638^2 + 1386^2 .

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

It is not an unprimeable number, because it can be changed into a prime (23432047) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32185 + ... + 32904.

Almost surely, 2^23432040 is an apocalyptic number.

23432040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23432040 is an abundant number, since it is smaller than the sum of its proper divisors (52723260).

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

23432040 is a wasteful number, since it uses less digits than its factorization.

23432040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65106 (or 65099 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 23432040 is about 4840.6652435383. The cubic root of 23432040 is about 286.1563361933.

Adding to 23432040 its reverse (4023432), we get a palindrome (27455472).

The spelling of 23432040 in words is "twenty-three million, four hundred thirty-two thousand, forty".