1028047684 has 6 divisors (see below), whose sum is σ = 1799083454. Its totient is φ = 514023840.

The previous prime is 1028047673. The next prime is 1028047703. The reversal of 1028047684 is 4867408201.

It can be written as a sum of positive squares in only one way, i.e., 1016972100 + 11075584 = 31890^2 + 3328^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128505957 + ... + 128505964.

Almost surely, 2^1028047684 is an apocalyptic number.

It is an amenable number.

1028047684 is a deficient number, since it is larger than the sum of its proper divisors (771035770).

1028047684 is a wasteful number, since it uses less digits than its factorization.

1028047684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257011925 (or 257011923 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 40.

The square root of 1028047684 is about 32063.1826866891. The cubic root of 1028047684 is about 1009.2631569778.

The spelling of 1028047684 in words is "one billion, twenty-eight million, forty-seven thousand, six hundred eighty-four".