1426788840 has 64 divisors (see below), whose sum is σ = 4283415360. Its totient is φ = 380206080.

The previous prime is 1426788833. The next prime is 1426788859. The reversal of 1426788840 is 488876241.

It is a super-3 number, since 3×1426788840³ (a number of 28 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1426788840.

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 15 ways as a sum of consecutive naturals, for example, 209895 + ... + 216585.

It is an arithmetic number, because the mean of its divisors is an integer number (66928365).

Almost surely, 2^1426788840 is an apocalyptic number.

1426788840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1426788840 is an abundant number, since it is smaller than the sum of its proper divisors (2856626520).

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

1426788840 is a wasteful number, since it uses less digits than its factorization.

1426788840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8482 (or 8478 counting only the distinct ones).

The product of its (nonzero) digits is 688128, while the sum is 48.

The square root of 1426788840 is about 37772.8585097819. The cubic root of 1426788840 is about 1125.7792369231.

The spelling of 1426788840 in words is "one billion, four hundred twenty-six million, seven hundred eighty-eight thousand, eight hundred forty".