6430251428 has 24 divisors (see below), whose sum is σ = 12078104472. Its totient is φ = 2984546304.

The previous prime is 6430251371. The next prime is 6430251439. The reversal of 6430251428 is 8241520346.

It can be written as a sum of positive squares in 4 ways, for example, as 3566717284 + 2863534144 = 59722^2 + 53512^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 642725 + ... + 652652.

It is an arithmetic number, because the mean of its divisors is an integer number (503254353).

Almost surely, 2^6430251428 is an apocalyptic number.

6430251428 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

6430251428 is a deficient number, since it is larger than the sum of its proper divisors (5647853044).

6430251428 is a wasteful number, since it uses less digits than its factorization.

6430251428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1295471 (or 1295469 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 35.

The square root of 6430251428 is about 80188.8485264628. The cubic root of 6430251428 is about 1859.5562424625.

The spelling of 6430251428 in words is "six billion, four hundred thirty million, two hundred fifty-one thousand, four hundred twenty-eight".