1402728 has 32 divisors (see below), whose sum is σ = 3536160. Its totient is φ = 463680.

The previous prime is 1402727. The next prime is 1402763. The reversal of 1402728 is 8272041.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 1402698 and 1402707.

It is not an unprimeable number, because it can be changed into a prime (1402727) 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 in 7 ways as a sum of consecutive naturals, for example, 4926 + ... + 5202.

It is an arithmetic number, because the mean of its divisors is an integer number (110505).

2^1402728 is an apocalyptic number.

It is an amenable number.

1402728 is an abundant number, since it is smaller than the sum of its proper divisors (2133432).

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

1402728 is a wasteful number, since it uses less digits than its factorization.

1402728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 497 (or 493 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 24.

The square root of 1402728 is about 1184.3681859962. The cubic root of 1402728 is about 111.9415085741.

Adding to 1402728 its reverse (8272041), we get a palindrome (9674769).

The spelling of 1402728 in words is "one million, four hundred two thousand, seven hundred twenty-eight".