7265321280 has 1008 divisors, whose sum is σ = 32114459520. Its totient is φ = 1473970176.

The previous prime is 7265321279. The next prime is 7265321291. The reversal of 7265321280 is 821235627.

It is a tau number, because it is divible by the number of its divisors (1008).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 168960939 + ... + 168960981.

Almost surely, 2^7265321280 is an apocalyptic number.

7265321280 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 7265321280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16057229760).

7265321280 is an abundant number, since it is smaller than the sum of its proper divisors (24849138240).

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

7265321280 is a wasteful number, since it uses less digits than its factorization.

7265321280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136 (or 106 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 7265321280 is about 85236.8540010716. The cubic root of 7265321280 is about 1936.8007354071.

The spelling of 7265321280 in words is "seven billion, two hundred sixty-five million, three hundred twenty-one thousand, two hundred eighty".