449845728 has 24 divisors (see below), whose sum is σ = 1180845288. Its totient is φ = 149948544.

The previous prime is 449845717. The next prime is 449845733. The reversal of 449845728 is 827548944.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×449845728² = 404722357999699968, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2342851 + ... + 2343042.

It is an arithmetic number, because the mean of its divisors is an integer number (49201887).

Almost surely, 2^449845728 is an apocalyptic number.

449845728 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

449845728 is an abundant number, since it is smaller than the sum of its proper divisors (730999560).

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

449845728 is a wasteful number, since it uses less digits than its factorization.

449845728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4685906 (or 4685898 counting only the distinct ones).

The product of its digits is 2580480, while the sum is 51.

The square root of 449845728 is about 21209.5668979826. The cubic root of 449845728 is about 766.2218519484.

The spelling of 449845728 in words is "four hundred forty-nine million, eight hundred forty-five thousand, seven hundred twenty-eight".