23432320 has 128 divisors (see below), whose sum is σ = 61689600. Its totient is φ = 8478720.

The previous prime is 23432317. The next prime is 23432329. The reversal of 23432320 is 2323432.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (19).

It is not an unprimeable number, because it can be changed into a prime (23432329) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 498537 + ... + 498583.

It is an arithmetic number, because the mean of its divisors is an integer number (481950).

Almost surely, 2^23432320 is an apocalyptic number.

23432320 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 23432320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30844800).

23432320 is an abundant number, since it is smaller than the sum of its proper divisors (38257280).

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

23432320 is a wasteful number, since it uses less digits than its factorization.

23432320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126 (or 114 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 19.

The square root of 23432320 is about 4840.6941650966. The cubic root of 23432320 is about 286.1574759924.

Adding to 23432320 its reverse (2323432), we get a palindrome (25755752).

The spelling of 23432320 in words is "twenty-three million, four hundred thirty-two thousand, three hundred twenty".