1400728 has 16 divisors (see below), whose sum is σ = 3001680. Its totient is φ = 600288.

The previous prime is 1400701. The next prime is 1400731. The reversal of 1400728 is 8270041.

It is a junction number, because it is equal to n+sod(n) for n = 1400699 and 1400708.

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, 12451 + ... + 12562.

It is an arithmetic number, because the mean of its divisors is an integer number (187605).

2^1400728 is an apocalyptic number.

It is an amenable number.

1400728 is an abundant number, since it is smaller than the sum of its proper divisors (1600952).

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

1400728 is a wasteful number, since it uses less digits than its factorization.

1400728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25026 (or 25022 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 22.

The square root of 1400728 is about 1183.5235527863. The cubic root of 1400728 is about 111.8882814564. Note that the first 3 decimals are identical.

Adding to 1400728 its reverse (8270041), we get a palindrome (9670769).

The spelling of 1400728 in words is "one million, four hundred thousand, seven hundred twenty-eight".