7728474 has 16 divisors (see below), whose sum is σ = 16646112. Its totient is φ = 2377968.

The previous prime is 7728463. The next prime is 7728527. The reversal of 7728474 is 4748277.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49464 + ... + 49619.

It is an arithmetic number, because the mean of its divisors is an integer number (1040382).

Almost surely, 2^7728474 is an apocalyptic number.

7728474 is an abundant number, since it is smaller than the sum of its proper divisors (8917638).

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

7728474 is a wasteful number, since it uses less digits than its factorization.

7728474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99101.

The product of its digits is 87808, while the sum is 39.

The square root of 7728474 is about 2780.0133093207. The cubic root of 7728474 is about 197.7111899961.

The spelling of 7728474 in words is "seven million, seven hundred twenty-eight thousand, four hundred seventy-four".