7258868728 has 32 divisors (see below), whose sum is σ = 13880986560. Its totient is φ = 3557681280.

The previous prime is 7258868671. The next prime is 7258868741. The reversal of 7258868728 is 8278688527.

It is a Harshad number since it is a multiple of its sum of digits (61).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117601 + ... + 168367.

It is an arithmetic number, because the mean of its divisors is an integer number (433780830).

Almost surely, 2^7258868728 is an apocalyptic number.

It is an amenable number.

7258868728 is a deficient number, since it is larger than the sum of its proper divisors (6622117832).

7258868728 is a wasteful number, since it uses less digits than its factorization.

7258868728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51127 (or 51123 counting only the distinct ones).

The product of its digits is 24084480, while the sum is 61.

The square root of 7258868728 is about 85198.9948767003. The cubic root of 7258868728 is about 1936.2271884365.

The spelling of 7258868728 in words is "seven billion, two hundred fifty-eight million, eight hundred sixty-eight thousand, seven hundred twenty-eight".