7406728 has 16 divisors (see below), whose sum is σ = 15871680. Its totient is φ = 3174288.

The previous prime is 7406723. The next prime is 7406731. The reversal of 7406728 is 8276047.

It is a junction number, because it is equal to n+sod(n) for n = 7406693 and 7406702.

It is not an unprimeable number, because it can be changed into a prime (7406723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66076 + ... + 66187.

It is an arithmetic number, because the mean of its divisors is an integer number (991980).

Almost surely, 2^7406728 is an apocalyptic number.

It is an amenable number.

7406728 is an abundant number, since it is smaller than the sum of its proper divisors (8464952).

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

7406728 is a wasteful number, since it uses less digits than its factorization.

7406728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132276 (or 132272 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 34.

The square root of 7406728 is about 2721.5304517863. The cubic root of 7406728 is about 194.9285559007.

The spelling of 7406728 in words is "seven million, four hundred six thousand, seven hundred twenty-eight".