1428647436 has 48 divisors (see below), whose sum is σ = 3773800800. Its totient is φ = 467228736.

The previous prime is 1428647401. The next prime is 1428647447. The reversal of 1428647436 is 6347468241.

1428647436 is a `hidden beast` number, since 142 + 8 + 6 + 474 + 36 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 1428647391 and 1428647400.

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, 119071 + ... + 130518.

It is an arithmetic number, because the mean of its divisors is an integer number (78620850).

Almost surely, 2^1428647436 is an apocalyptic number.

It is an amenable number.

1428647436 is an abundant number, since it is smaller than the sum of its proper divisors (2345153364).

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

1428647436 is a wasteful number, since it uses less digits than its factorization.

1428647436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249655 (or 249647 counting only the distinct ones).

The product of its digits is 774144, while the sum is 45.

The square root of 1428647436 is about 37797.4527713178. The cubic root of 1428647436 is about 1126.2678541706.

The spelling of 1428647436 in words is "one billion, four hundred twenty-eight million, six hundred forty-seven thousand, four hundred thirty-six".