1422723840 has 144 divisors (see below), whose sum is σ = 4641090048. Its totient is φ = 371273728.

The previous prime is 1422723823. The next prime is 1422723851. The reversal of 1422723840 is 483272241.

It is a happy number.

1422723840 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 176539 + ... + 184421.

It is an arithmetic number, because the mean of its divisors is an integer number (32229792).

Almost surely, 2^1422723840 is an apocalyptic number.

1422723840 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 1422723840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2320545024).

1422723840 is an abundant number, since it is smaller than the sum of its proper divisors (3218366208).

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

1422723840 is an equidigital number, since it uses as much as digits as its factorization.

1422723840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7954 (or 7940 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 33.

The square root of 1422723840 is about 37719.0116519508. The cubic root of 1422723840 is about 1124.7090842843.

The spelling of 1422723840 in words is "one billion, four hundred twenty-two million, seven hundred twenty-three thousand, eight hundred forty".