7202821920 has 192 divisors, whose sum is σ = 25966967040. Its totient is φ = 1644023808.

The previous prime is 7202821909. The next prime is 7202821937. The reversal of 7202821920 is 291282027.

It is a super-2 number, since 2×7202821920² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3725274 + ... + 3727206.

It is an arithmetic number, because the mean of its divisors is an integer number (135244620).

Almost surely, 2^7202821920 is an apocalyptic number.

7202821920 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7202821920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12983483520).

7202821920 is an abundant number, since it is smaller than the sum of its proper divisors (18764145120).

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

7202821920 is a wasteful number, since it uses less digits than its factorization.

7202821920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3067 (or 3059 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 7202821920 is about 84869.4404364728. The cubic root of 7202821920 is about 1931.2310079091.

The spelling of 7202821920 in words is "seven billion, two hundred two million, eight hundred twenty-one thousand, nine hundred twenty".