256028242 has 8 divisors (see below), whose sum is σ = 386053632. Its totient is φ = 127343700.

The previous prime is 256028219. The next prime is 256028251. The reversal of 256028242 is 242820652.

256028242 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a super-2 number, since 2×256028242² = 131100921403221128, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 334734 + ... + 335497.

It is an arithmetic number, because the mean of its divisors is an integer number (48256704).

Almost surely, 2^256028242 is an apocalyptic number.

256028242 is a deficient number, since it is larger than the sum of its proper divisors (130025390).

256028242 is a wasteful number, since it uses less digits than its factorization.

256028242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 670424.

The product of its (nonzero) digits is 15360, while the sum is 31.

The square root of 256028242 is about 16000.8825381602. The cubic root of 256028242 is about 634.9837696060.

Adding to 256028242 its reverse (242820652), we get a palindrome (498848894).

The spelling of 256028242 in words is "two hundred fifty-six million, twenty-eight thousand, two hundred forty-two".