256154218 has 4 divisors (see below), whose sum is σ = 384231330. Its totient is φ = 128077108.

The previous prime is 256154207. The next prime is 256154221. The reversal of 256154218 is 812451652.

It is a happy number.

256154218 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 217179169 + 38975049 = 14737^2 + 6243^2 .

It is a super-2 number, since 2×256154218² = 131229966798383048, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64038553 + ... + 64038556.

Almost surely, 2^256154218 is an apocalyptic number.

256154218 is a deficient number, since it is larger than the sum of its proper divisors (128077112).

256154218 is a wasteful number, since it uses less digits than its factorization.

256154218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128077111.

The product of its digits is 19200, while the sum is 34.

The square root of 256154218 is about 16004.8185869131. The cubic root of 256154218 is about 635.0878982215.

The spelling of 256154218 in words is "two hundred fifty-six million, one hundred fifty-four thousand, two hundred eighteen".