724920828 has 24 divisors (see below), whose sum is σ = 1719212880. Its totient is φ = 237678720.

The previous prime is 724920811. The next prime is 724920829. The reversal of 724920828 is 828029427.

It is a self number, because there is not a number n which added to its sum of digits gives 724920828.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (724920829) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 494433 + ... + 495896.

It is an arithmetic number, because the mean of its divisors is an integer number (71633870).

Almost surely, 2^724920828 is an apocalyptic number.

It is an amenable number.

724920828 is an abundant number, since it is smaller than the sum of its proper divisors (994292052).

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

724920828 is a wasteful number, since it uses less digits than its factorization.

724920828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 990397 (or 990395 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 42.

The square root of 724920828 is about 26924.3538084018. The cubic root of 724920828 is about 898.3181875827.

The spelling of 724920828 in words is "seven hundred twenty-four million, nine hundred twenty thousand, eight hundred twenty-eight".