1356728 has 8 divisors (see below), whose sum is σ = 2543880. Its totient is φ = 678360.

The previous prime is 1356727. The next prime is 1356737. The reversal of 1356728 is 8276531.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 1356694 and 1356703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1356721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84788 + ... + 84803.

It is an arithmetic number, because the mean of its divisors is an integer number (317985).

2^1356728 is an apocalyptic number.

It is an amenable number.

1356728 is a deficient number, since it is larger than the sum of its proper divisors (1187152).

1356728 is a wasteful number, since it uses less digits than its factorization.

1356728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169597 (or 169593 counting only the distinct ones).

The product of its digits is 10080, while the sum is 32.

The square root of 1356728 is about 1164.7866757480. The cubic root of 1356728 is about 110.7042420104.

The spelling of 1356728 in words is "one million, three hundred fifty-six thousand, seven hundred twenty-eight".