7500420720 has 320 divisors, whose sum is σ = 28048204800. Its totient is φ = 1831265280.

The previous prime is 7500420647. The next prime is 7500420761. The reversal of 7500420720 is 270240057.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3677461 + ... + 3679499.

It is an arithmetic number, because the mean of its divisors is an integer number (87650640).

Almost surely, 2^7500420720 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7500420720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14024102400).

7500420720 is an abundant number, since it is smaller than the sum of its proper divisors (20547784080).

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

7500420720 is a wasteful number, since it uses less digits than its factorization.

7500420720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2205 (or 2193 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 27.

The square root of 7500420720 is about 86604.9693724327. The cubic root of 7500420720 is about 1957.4704213026.

Adding to 7500420720 its reverse (270240057), we get a palindrome (7770660777).

The spelling of 7500420720 in words is "seven billion, five hundred million, four hundred twenty thousand, seven hundred twenty".