7256238648 has 128 divisors (see below), whose sum is σ = 18907257600. Its totient is φ = 2319077376.

The previous prime is 7256238637. The next prime is 7256238653. The reversal of 7256238648 is 8468326527.

It is a self number, because there is not a number n which added to its sum of digits gives 7256238648.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17317783 + ... + 17318201.

It is an arithmetic number, because the mean of its divisors is an integer number (147712950).

Almost surely, 2^7256238648 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 7256238648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9453628800).

7256238648 is an abundant number, since it is smaller than the sum of its proper divisors (11651018952).

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

7256238648 is a wasteful number, since it uses less digits than its factorization.

7256238648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 741 (or 737 counting only the distinct ones).

The product of its digits is 3870720, while the sum is 51.

The square root of 7256238648 is about 85183.5585544535. The cubic root of 7256238648 is about 1935.9933114253.

The spelling of 7256238648 in words is "seven billion, two hundred fifty-six million, two hundred thirty-eight thousand, six hundred forty-eight".