1426681856 has 52 divisors (see below), whose sum is σ = 2889784800. Its totient is φ = 704151552.

The previous prime is 1426681843. The next prime is 1426681859. The reversal of 1426681856 is 6581866241.

It is a super-2 number, since 2×1426681856² = 4070842236479209472, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1426681856.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1426681859) 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, 321380 + ... + 325788.

Almost surely, 2^1426681856 is an apocalyptic number.

1426681856 is a gapful number since it is divisible by the number (16) 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 1426681856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1444892400).

1426681856 is an abundant number, since it is smaller than the sum of its proper divisors (1463102944).

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

1426681856 is an frugal number, since it uses more digits than its factorization.

1426681856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4512 (or 4490 counting only the distinct ones).

The product of its digits is 552960, while the sum is 47.

The square root of 1426681856 is about 37771.4423341233. The cubic root of 1426681856 is about 1125.7510983570.

The spelling of 1426681856 in words is "one billion, four hundred twenty-six million, six hundred eighty-one thousand, eight hundred fifty-six".