1423532320 has 96 divisors (see below), whose sum is σ = 3922128000. Its totient is φ = 488049408.

The previous prime is 1423532273. The next prime is 1423532323. The reversal of 1423532320 is 232353241.

It is not an unprimeable number, because it can be changed into a prime (1423532323) 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, 41911 + ... + 67849.

It is an arithmetic number, because the mean of its divisors is an integer number (40855500).

Almost surely, 2^1423532320 is an apocalyptic number.

1423532320 is a gapful number since it is divisible by the number (10) 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 1423532320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1961064000).

1423532320 is an abundant number, since it is smaller than the sum of its proper divisors (2498595680).

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

1423532320 is an equidigital number, since it uses as much as digits as its factorization.

1423532320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25975 (or 25953 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 1423532320 is about 37729.7272717416. The cubic root of 1423532320 is about 1124.9220871145.

Adding to 1423532320 its reverse (232353241), we get a palindrome (1655885561).

The spelling of 1423532320 in words is "one billion, four hundred twenty-three million, five hundred thirty-two thousand, three hundred twenty".