651835428 has 12 divisors (see below), whose sum is σ = 1520949360. Its totient is φ = 217278472.

The previous prime is 651835423. The next prime is 651835439. The reversal of 651835428 is 824538156.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 651835428.

It is not an unprimeable number, because it can be changed into a prime (651835423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27159798 + ... + 27159821.

It is an arithmetic number, because the mean of its divisors is an integer number (126745780).

Almost surely, 2^651835428 is an apocalyptic number.

It is an amenable number.

651835428 is an abundant number, since it is smaller than the sum of its proper divisors (869113932).

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

651835428 is a wasteful number, since it uses less digits than its factorization.

651835428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54319626 (or 54319624 counting only the distinct ones).

The product of its digits is 230400, while the sum is 42.

The square root of 651835428 is about 25531.0678977594. The cubic root of 651835428 is about 867.0536824424.

The spelling of 651835428 in words is "six hundred fifty-one million, eight hundred thirty-five thousand, four hundred twenty-eight".