5191656428 has 108 divisors (see below), whose sum is σ = 11192055336. Its totient is φ = 2099865600.

The previous prime is 5191656427. The next prime is 5191656467. The reversal of 5191656428 is 8246561915.

It is not an unprimeable number, because it can be changed into a prime (5191656427) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 8098988 + ... + 8099628.

It is an arithmetic number, because the mean of its divisors is an integer number (103630142).

Almost surely, 2^5191656428 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 5191656428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5596027668).

5191656428 is an abundant number, since it is smaller than the sum of its proper divisors (6000398908).

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

5191656428 is a wasteful number, since it uses less digits than its factorization.

5191656428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 764 (or 724 counting only the distinct ones).

The product of its digits is 518400, while the sum is 47.

The square root of 5191656428 is about 72053.1500213558. The cubic root of 5191656428 is about 1731.5511084514.

The spelling of 5191656428 in words is "five billion, one hundred ninety-one million, six hundred fifty-six thousand, four hundred twenty-eight".