7265444640 has 96 divisors (see below), whose sum is σ = 23026804416. Its totient is φ = 1925544960.

The previous prime is 7265444621. The next prime is 7265444687. The reversal of 7265444640 is 464445627.

It is a tau number, because it is divible by the number of its divisors (96).

It is a junction number, because it is equal to n+sod(n) for n = 7265444592 and 7265444601.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31810 + ... + 124670.

It is an arithmetic number, because the mean of its divisors is an integer number (239862546).

Almost surely, 2^7265444640 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 7265444640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11513402208).

7265444640 is an abundant number, since it is smaller than the sum of its proper divisors (15761359776).

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

7265444640 is a wasteful number, since it uses less digits than its factorization.

7265444640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93042 (or 93034 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 42.

The square root of 7265444640 is about 85237.5776286492. The cubic root of 7265444640 is about 1936.8116971791.

The spelling of 7265444640 in words is "seven billion, two hundred sixty-five million, four hundred forty-four thousand, six hundred forty".