4609728 has 84 divisors (see below), whose sum is σ = 13551408. Its totient is φ = 1497600.

The previous prime is 4609727. The next prime is 4609733. The reversal of 4609728 is 8279064.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 4609692 and 4609701.

It is not an unprimeable number, because it can be changed into a prime (4609721) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30453 + ... + 30603.

Almost surely, 2^4609728 is an apocalyptic number.

4609728 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4609728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6775704).

4609728 is an abundant number, since it is smaller than the sum of its proper divisors (8941680).

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

4609728 is a wasteful number, since it uses less digits than its factorization.

4609728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222 (or 209 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 4609728 is about 2147.0277129092. The cubic root of 4609728 is about 166.4275040828.

The spelling of 4609728 in words is "four million, six hundred nine thousand, seven hundred twenty-eight".