720449828 has 24 divisors (see below), whose sum is σ = 1516737600. Its totient is φ = 292513248.

The previous prime is 720449803. The next prime is 720449831. The reversal of 720449828 is 828944027.

It is an unprimeable number.

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, 676583 + ... + 677646.

It is an arithmetic number, because the mean of its divisors is an integer number (63197400).

Almost surely, 2^720449828 is an apocalyptic number.

It is an amenable number.

720449828 is an abundant number, since it is smaller than the sum of its proper divisors (796287772).

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

720449828 is a wasteful number, since it uses less digits than its factorization.

720449828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1354259 (or 1354257 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 44.

The square root of 720449828 is about 26841.1964710964. The cubic root of 720449828 is about 896.4675642808.

The spelling of 720449828 in words is "seven hundred twenty million, four hundred forty-nine thousand, eight hundred twenty-eight".