256454722 has 8 divisors (see below), whose sum is σ = 387450000. Its totient is φ = 127304724.

The previous prime is 256454689. The next prime is 256454747. The reversal of 256454722 is 227454652.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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, 460972 + ... + 461527.

It is an arithmetic number, because the mean of its divisors is an integer number (48431250).

Almost surely, 2^256454722 is an apocalyptic number.

256454722 is a deficient number, since it is larger than the sum of its proper divisors (130995278).

256454722 is a wasteful number, since it uses less digits than its factorization.

256454722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 922640.

The product of its digits is 134400, while the sum is 37.

The square root of 256454722 is about 16014.2037579144. The cubic root of 256454722 is about 635.3361495473.

The spelling of 256454722 in words is "two hundred fifty-six million, four hundred fifty-four thousand, seven hundred twenty-two".