7775113728 has 80 divisors (see below), whose sum is σ = 21803649120. Its totient is φ = 2455289856.

The previous prime is 7775113699. The next prime is 7775113769. The reversal of 7775113728 is 8273115777.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104025 + ... + 162392.

It is an arithmetic number, because the mean of its divisors is an integer number (272545614).

Almost surely, 2^7775113728 is an apocalyptic number.

It is an amenable number.

7775113728 is an abundant number, since it is smaller than the sum of its proper divisors (14028535392).

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

7775113728 is a wasteful number, since it uses less digits than its factorization.

7775113728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266457 (or 266441 counting only the distinct ones).

The product of its digits is 576240, while the sum is 48.

The square root of 7775113728 is about 88176.6053327072. The cubic root of 7775113728 is about 1981.0810788416.

The spelling of 7775113728 in words is "seven billion, seven hundred seventy-five million, one hundred thirteen thousand, seven hundred twenty-eight".