1428604686 has 48 divisors (see below), whose sum is σ = 3148486224. Its totient is φ = 468052992.

The previous prime is 1428604679. The next prime is 1428604687. The reversal of 1428604686 is 6864068241.

1428604686 is a `hidden beast` number, since 14 + 28 + 604 + 6 + 8 + 6 = 666.

It is a super-2 number, since 2×1428604686² = 4081822697722317192, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1428604687) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 694836 + ... + 696888.

It is an arithmetic number, because the mean of its divisors is an integer number (65593463).

Almost surely, 2^1428604686 is an apocalyptic number.

1428604686 is an abundant number, since it is smaller than the sum of its proper divisors (1719881538).

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

1428604686 is a wasteful number, since it uses less digits than its factorization.

1428604686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2705 (or 2702 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 45.

The square root of 1428604686 is about 37796.8872527884. The cubic root of 1428604686 is about 1126.2566201344.

The spelling of 1428604686 in words is "one billion, four hundred twenty-eight million, six hundred four thousand, six hundred eighty-six".