7855426728 has 48 divisors (see below), whose sum is σ = 22394860800. Its totient is φ = 2480660640.

The previous prime is 7855426651. The next prime is 7855426751. The reversal of 7855426728 is 8276245587.

7855426728 is a `hidden beast` number, since 7 + 8 + 554 + 2 + 67 + 28 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2869768 + ... + 2872503.

It is an arithmetic number, because the mean of its divisors is an integer number (466559600).

Almost surely, 2^7855426728 is an apocalyptic number.

It is an amenable number.

7855426728 is an abundant number, since it is smaller than the sum of its proper divisors (14539434072).

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

7855426728 is a wasteful number, since it uses less digits than its factorization.

7855426728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5742302 (or 5742295 counting only the distinct ones).

The product of its digits is 7526400, while the sum is 54.

The square root of 7855426728 is about 88630.8452402435. The cubic root of 7855426728 is about 1987.8789153905.

The spelling of 7855426728 in words is "seven billion, eight hundred fifty-five million, four hundred twenty-six thousand, seven hundred twenty-eight".