1361604728 has 16 divisors (see below), whose sum is σ = 2785100760. Its totient is φ = 618911200.

The previous prime is 1361604697. The next prime is 1361604731. The reversal of 1361604728 is 8274061631.

It is a junction number, because it is equal to n+sod(n) for n = 1361604691 and 1361604700.

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, 7736303 + ... + 7736478.

Almost surely, 2^1361604728 is an apocalyptic number.

It is an amenable number.

1361604728 is an abundant number, since it is smaller than the sum of its proper divisors (1423496032).

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

1361604728 is a wasteful number, since it uses less digits than its factorization.

1361604728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15472798 (or 15472794 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 1361604728 is about 36899.9285636165. The cubic root of 1361604728 is about 1108.3672469670.

The spelling of 1361604728 in words is "one billion, three hundred sixty-one million, six hundred four thousand, seven hundred twenty-eight".