651028 has 12 divisors (see below), whose sum is σ = 1302112. Its totient is φ = 279000.

The previous prime is 651019. The next prime is 651029. The reversal of 651028 is 820156.

It is a happy number.

651028 is an admirable number.

It is a hoax number, since the sum of its digits (22) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (651029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11598 + ... + 11653.

2⁶⁵¹⁰²⁸ is an apocalyptic number.

It is an amenable number.

651028 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

651028 is a wasteful number, since it uses less digits than its factorization.

651028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23262 (or 23260 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 651028 is about 806.8630614918. The cubic root of 651028 is about 86.6695528296.

The spelling of 651028 in words is "six hundred fifty-one thousand, twenty-eight".