4691449728 has 384 divisors, whose sum is σ = 16293888000. Its totient is φ = 1293788160.

The previous prime is 4691449703. The next prime is 4691449739. The reversal of 4691449728 is 8279441964.

4691449728 is a `hidden beast` number, since 46 + 91 + 4 + 497 + 28 = 666.

It is a tau number, because it is divible by the number of its divisors (384).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12249025 + ... + 12249407.

It is an arithmetic number, because the mean of its divisors is an integer number (42432000).

Almost surely, 2^4691449728 is an apocalyptic number.

4691449728 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 4691449728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8146944000).

4691449728 is an abundant number, since it is smaller than the sum of its proper divisors (11602438272).

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

4691449728 is a wasteful number, since it uses less digits than its factorization.

4691449728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 455 (or 426 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 54.

The square root of 4691449728 is about 68494.1583494534. The cubic root of 4691449728 is about 1674.0523015652.

The spelling of 4691449728 in words is "four billion, six hundred ninety-one million, four hundred forty-nine thousand, seven hundred twenty-eight".