1423440000 has 320 divisors, whose sum is σ = 5257692000. Its totient is φ = 379008000.

The previous prime is 1423439993. The next prime is 1423440017. The reversal of 1423440000 is 443241.

It is a tau number, because it is divible by the number of its divisors (320).

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

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2159671 + ... + 2160329.

Almost surely, 2^1423440000 is an apocalyptic number.

1423440000 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 1423440000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2628846000).

1423440000 is an abundant number, since it is smaller than the sum of its proper divisors (3834252000).

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

1423440000 is an frugal number, since it uses more digits than its factorization.

1423440000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 702 (or 669 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 1423440000 is about 37728.5038134300. The cubic root of 1423440000 is about 1124.8977684880.

Adding to 1423440000 its reverse (443241), we get a palindrome (1423883241).

The spelling of 1423440000 in words is "one billion, four hundred twenty-three million, four hundred forty thousand".