720024540 has 24 divisors (see below), whose sum is σ = 2016068880. Its totient is φ = 192006528.

The previous prime is 720024517. The next prime is 720024563. The reversal of 720024540 is 45420027.

It is an interprime number because it is at equal distance from previous prime (720024517) and next prime (720024563).

It is a self number, because there is not a number n which added to its sum of digits gives 720024540.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6000145 + ... + 6000264.

It is an arithmetic number, because the mean of its divisors is an integer number (84002870).

Almost surely, 2^720024540 is an apocalyptic number.

It is an amenable number.

720024540 is an abundant number, since it is smaller than the sum of its proper divisors (1296044340).

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

720024540 is a wasteful number, since it uses less digits than its factorization.

720024540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12000421 (or 12000419 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 24.

The square root of 720024540 is about 26833.2730020026. The cubic root of 720024540 is about 896.2911319432.

Adding to 720024540 its reverse (45420027), we get a palindrome (765444567).

The spelling of 720024540 in words is "seven hundred twenty million, twenty-four thousand, five hundred forty".