1368728 has 8 divisors (see below), whose sum is σ = 2566380. Its totient is φ = 684360.

The previous prime is 1368727. The next prime is 1368737. The reversal of 1368728 is 8278631.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1368727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85538 + ... + 85553.

2^1368728 is an apocalyptic number.

It is an amenable number.

1368728 is a deficient number, since it is larger than the sum of its proper divisors (1197652).

1368728 is a wasteful number, since it uses less digits than its factorization.

1368728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171097 (or 171093 counting only the distinct ones).

The product of its digits is 16128, while the sum is 35.

The square root of 1368728 is about 1169.9264934174. The cubic root of 1368728 is about 111.0296703953.

Subtracting 1368728 from its reverse (8278631), we obtain a triangular number (6909903 = T₃₇₁₇).

The spelling of 1368728 in words is "one million, three hundred sixty-eight thousand, seven hundred twenty-eight".