7205001920 has 28 divisors (see below), whose sum is σ = 17156911584. Its totient is φ = 2882000640.

The previous prime is 7205001917. The next prime is 7205001929. The reversal of 7205001920 is 291005027.

It is a self number, because there is not a number n which added to its sum of digits gives 7205001920.

It is not an unprimeable number, because it can be changed into a prime (7205001929) 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 3 ways as a sum of consecutive naturals, for example, 11257496 + ... + 11258135.

Almost surely, 2^7205001920 is an apocalyptic number.

It is an amenable number.

7205001920 is an abundant number, since it is smaller than the sum of its proper divisors (9951909664).

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

7205001920 is a wasteful number, since it uses less digits than its factorization.

7205001920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22515648 (or 22515638 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 26.

The square root of 7205001920 is about 84882.2827214254. The cubic root of 7205001920 is about 1931.4258231715.

Adding to 7205001920 its reverse (291005027), we get a palindrome (7496006947).

The spelling of 7205001920 in words is "seven billion, two hundred five million, one thousand, nine hundred twenty".