6128744820 has 48 divisors (see below), whose sum is σ = 18720531648. Its totient is φ = 1485756160.

The previous prime is 6128744803. The next prime is 6128744827. The reversal of 6128744820 is 284478216.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6128744827) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4642329 + ... + 4643648.

It is an arithmetic number, because the mean of its divisors is an integer number (390011076).

Almost surely, 2^6128744820 is an apocalyptic number.

6128744820 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6128744820 is an abundant number, since it is smaller than the sum of its proper divisors (12591786828).

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

6128744820 is a wasteful number, since it uses less digits than its factorization.

6128744820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9286000 (or 9285998 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 42.

The square root of 6128744820 is about 78286.3003340942. The cubic root of 6128744820 is about 1830.0256617979.

The spelling of 6128744820 in words is "six billion, one hundred twenty-eight million, seven hundred forty-four thousand, eight hundred twenty".