256022380 has 24 divisors (see below), whose sum is σ = 569274048. Its totient is φ = 96384768.

The previous prime is 256022369. The next prime is 256022423. The reversal of 256022380 is 83220652.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 376164 + ... + 376843.

It is an arithmetic number, because the mean of its divisors is an integer number (23719752).

Almost surely, 2^256022380 is an apocalyptic number.

256022380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

256022380 is an abundant number, since it is smaller than the sum of its proper divisors (313251668).

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

256022380 is a wasteful number, since it uses less digits than its factorization.

256022380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 753033 (or 753031 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 256022380 is about 16000.6993597155. The cubic root of 256022380 is about 634.9789233916.

The spelling of 256022380 in words is "two hundred fifty-six million, twenty-two thousand, three hundred eighty".