256433093 has 8 divisors (see below), whose sum is σ = 293306112. Its totient is φ = 219620016.

The previous prime is 256433087. The next prime is 256433143. The reversal of 256433093 is 390334652.

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

It is not a de Polignac number, because 256433093 - 2¹⁶ = 256367557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256403093) 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, 5405 + ... + 23282.

It is an arithmetic number, because the mean of its divisors is an integer number (36663264).

Almost surely, 2^256433093 is an apocalyptic number.

It is an amenable number.

256433093 is a deficient number, since it is larger than the sum of its proper divisors (36873019).

256433093 is a wasteful number, since it uses less digits than its factorization.

256433093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29971.

The product of its (nonzero) digits is 58320, while the sum is 35.

The square root of 256433093 is about 16013.5284369186. The cubic root of 256433093 is about 635.3182879513.

The spelling of 256433093 in words is "two hundred fifty-six million, four hundred thirty-three thousand, ninety-three".