1047828636 has 72 divisors (see below), whose sum is σ = 2813878704. Its totient is φ = 340744320.

The previous prime is 1047828623. The next prime is 1047828647. The reversal of 1047828636 is 6368287401.

1047828636 is a `hidden beast` number, since 1 + 0 + 4 + 7 + 8 + 2 + 8 + 636 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 1047828591 and 1047828600.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26706 + ... + 52998.

Almost surely, 2^1047828636 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1047828636, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1406939352).

1047828636 is an abundant number, since it is smaller than the sum of its proper divisors (1766050068).

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

1047828636 is a wasteful number, since it uses less digits than its factorization.

1047828636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26353 (or 26339 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The square root of 1047828636 is about 32370.1812784544. The cubic root of 1047828636 is about 1015.6952490309.

The spelling of 1047828636 in words is "one billion, forty-seven million, eight hundred twenty-eight thousand, six hundred thirty-six".