449720520 has 32 divisors (see below), whose sum is σ = 1349161920. Its totient is φ = 119925440.

The previous prime is 449720507. The next prime is 449720521. The reversal of 449720520 is 25027944.

It is a super-2 number, since 2×449720520² = 404497092218140800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (449720521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1873716 + ... + 1873955.

It is an arithmetic number, because the mean of its divisors is an integer number (42161310).

Almost surely, 2^449720520 is an apocalyptic number.

449720520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

449720520 is an abundant number, since it is smaller than the sum of its proper divisors (899441400).

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

449720520 is a wasteful number, since it uses less digits than its factorization.

449720520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3747685 (or 3747681 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 449720520 is about 21206.6150057005. The cubic root of 449720520 is about 766.1507564580.

The spelling of 449720520 in words is "four hundred forty-nine million, seven hundred twenty thousand, five hundred twenty".