1426784678 has 8 divisors (see below), whose sum is σ = 2334738600. Its totient is φ = 648538480.

The previous prime is 1426784627. The next prime is 1426784741. The reversal of 1426784678 is 8764876241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×1426784678³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32426903 + ... + 32426946.

It is an arithmetic number, because the mean of its divisors is an integer number (291842325).

Almost surely, 2^1426784678 is an apocalyptic number.

1426784678 is a deficient number, since it is larger than the sum of its proper divisors (907953922).

1426784678 is a wasteful number, since it uses less digits than its factorization.

1426784678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64853862.

The product of its digits is 3612672, while the sum is 53.

The square root of 1426784678 is about 37772.8034172737. The cubic root of 1426784678 is about 1125.7781422744.

The spelling of 1426784678 in words is "one billion, four hundred twenty-six million, seven hundred eighty-four thousand, six hundred seventy-eight".