4507849728 has 66 divisors (see below), whose sum is σ = 13016344874. Its totient is φ = 1502613504.

The previous prime is 4507849691. The next prime is 4507849729. The reversal of 4507849728 is 8279487054.

It is a happy number.

4507849728 is a `hidden beast` number, since 450 + 7 + 84 + 97 + 28 = 666.

It can be written as a sum of positive squares in only one way, i.e., 3990196224 + 517653504 = 63168^2 + 22752^2 .

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4507849729) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 235351 + ... + 253782.

Almost surely, 2^4507849728 is an apocalyptic number.

4507849728 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

4507849728 is an abundant number, since it is smaller than the sum of its proper divisors (8508495146).

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

4507849728 is a wasteful number, since it uses less digits than its factorization.

4507849728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489159 (or 489138 counting only the distinct ones).

The product of its (nonzero) digits is 4515840, while the sum is 54.

The square root of 4507849728 is about 67140.5222499796. The cubic root of 4507849728 is about 1651.9230383117.

The spelling of 4507849728 in words is "four billion, five hundred seven million, eight hundred forty-nine thousand, seven hundred twenty-eight".