256220622 has 24 divisors (see below), whose sum is σ = 634451376. Its totient is φ = 73205856.

The previous prime is 256220599. The next prime is 256220623. The reversal of 256220622 is 226022652.

256220622 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256220623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1016623 + ... + 1016874.

It is an arithmetic number, because the mean of its divisors is an integer number (26435474).

Almost surely, 2^256220622 is an apocalyptic number.

256220622 is an abundant number, since it is smaller than the sum of its proper divisors (378230754).

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

256220622 is a wasteful number, since it uses less digits than its factorization.

256220622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2033512 (or 2033509 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 256220622 is about 16006.8929527251. The cubic root of 256220622 is about 635.1427723692.

The spelling of 256220622 in words is "two hundred fifty-six million, two hundred twenty thousand, six hundred twenty-two".