1426638320 has 20 divisors (see below), whose sum is σ = 3316934280. Its totient is φ = 570655296.

The previous prime is 1426638299. The next prime is 1426638377. The reversal of 1426638320 is 238366241.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8916410 + ... + 8916569.

It is an arithmetic number, because the mean of its divisors is an integer number (165846714).

Almost surely, 2^1426638320 is an apocalyptic number.

1426638320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1426638320 is an abundant number, since it is smaller than the sum of its proper divisors (1890295960).

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

1426638320 is a wasteful number, since it uses less digits than its factorization.

1426638320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17832992 (or 17832986 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 35.

The square root of 1426638320 is about 37770.8660213133. The cubic root of 1426638320 is about 1125.7396472644.

The spelling of 1426638320 in words is "one billion, four hundred twenty-six million, six hundred thirty-eight thousand, three hundred twenty".