724020444 has 72 divisors (see below), whose sum is σ = 2169102208. Its totient is φ = 206861040.

The previous prime is 724020443. The next prime is 724020481. The reversal of 724020444 is 444020427.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (724020443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 46402 + ... + 60009.

Almost surely, 2^724020444 is an apocalyptic number.

It is an amenable number.

724020444 is an abundant number, since it is smaller than the sum of its proper divisors (1445081764).

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

724020444 is a wasteful number, since it uses less digits than its factorization.

724020444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106437 (or 106423 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 27.

The square root of 724020444 is about 26907.6279891038. The cubic root of 724020444 is about 897.9461164124.

The spelling of 724020444 in words is "seven hundred twenty-four million, twenty thousand, four hundred forty-four".