1426645520 has 80 divisors (see below), whose sum is σ = 3451921920. Its totient is φ = 547901952.

The previous prime is 1426645511. The next prime is 1426645603. The reversal of 1426645520 is 255466241.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 195701 + ... + 202859.

It is an arithmetic number, because the mean of its divisors is an integer number (43149024).

Almost surely, 2^1426645520 is an apocalyptic number.

1426645520 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 1426645520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1725960960).

1426645520 is an abundant number, since it is smaller than the sum of its proper divisors (2025276400).

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

1426645520 is a wasteful number, since it uses less digits than its factorization.

1426645520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7272 (or 7266 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 35.

The square root of 1426645520 is about 37770.9613327487. The cubic root of 1426645520 is about 1125.7415410664.

The spelling of 1426645520 in words is "one billion, four hundred twenty-six million, six hundred forty-five thousand, five hundred twenty".