651043328 has 40 divisors (see below), whose sum is σ = 1400892108. Its totient is φ = 300478464.

The previous prime is 651043297. The next prime is 651043333. The reversal of 651043328 is 823340156.

It can be written as a sum of positive squares in 2 ways, for example, as 641507584 + 9535744 = 25328^2 + 3088^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 651043294 and 651043303.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42251 + ... + 55562.

Almost surely, 2^651043328 is an apocalyptic number.

It is an amenable number.

651043328 is an abundant number, since it is smaller than the sum of its proper divisors (749848780).

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

651043328 is an equidigital number, since it uses as much as digits as its factorization.

651043328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97844 (or 97828 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 651043328 is about 25515.5507093223. The cubic root of 651043328 is about 866.7023301564.

The spelling of 651043328 in words is "six hundred fifty-one million, forty-three thousand, three hundred twenty-eight".