1423344220 has 12 divisors (see below), whose sum is σ = 2989022904. Its totient is φ = 569337680.

The previous prime is 1423344211. The next prime is 1423344229. The reversal of 1423344220 is 224433241.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1423344211) and next prime (1423344229).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1423344229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35583586 + ... + 35583625.

It is an arithmetic number, because the mean of its divisors is an integer number (249085242).

Almost surely, 2^1423344220 is an apocalyptic number.

1423344220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1423344220 is an abundant number, since it is smaller than the sum of its proper divisors (1565678684).

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

1423344220 is a wasteful number, since it uses less digits than its factorization.

1423344220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71167220 (or 71167218 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 25.

The square root of 1423344220 is about 37727.2344600025. The cubic root of 1423344220 is about 1124.8725373286.

Adding to 1423344220 its reverse (224433241), we get a palindrome (1647777461).

The spelling of 1423344220 in words is "one billion, four hundred twenty-three million, three hundred forty-four thousand, two hundred twenty".