256470233 has 8 divisors (see below), whose sum is σ = 261588096. Its totient is φ = 251362800.

The previous prime is 256470197. The next prime is 256470239. The reversal of 256470233 is 332074652.

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

It is a cyclic number.

It is not a de Polignac number, because 256470233 - 2¹² = 256466137 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 256470233.

It is not an unprimeable number, because it can be changed into a prime (256470239) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63278 + ... + 67208.

It is an arithmetic number, because the mean of its divisors is an integer number (32698512).

Almost surely, 2^256470233 is an apocalyptic number.

It is an amenable number.

256470233 is a deficient number, since it is larger than the sum of its proper divisors (5117863).

256470233 is a wasteful number, since it uses less digits than its factorization.

256470233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5215.

The product of its (nonzero) digits is 30240, while the sum is 32.

The square root of 256470233 is about 16014.6880394218. The cubic root of 256470233 is about 635.3489581765.

The spelling of 256470233 in words is "two hundred fifty-six million, four hundred seventy thousand, two hundred thirty-three".