256451098 has 8 divisors (see below), whose sum is σ = 385891092. Its totient is φ = 127820736.

The previous prime is 256451093. The next prime is 256451099. The reversal of 256451098 is 890154652.

It can be written as a sum of positive squares in 2 ways, for example, as 252905409 + 3545689 = 15903^2 + 1883^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 256451098.

It is not an unprimeable number, because it can be changed into a prime (256451093) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 201615 + ... + 202882.

Almost surely, 2^256451098 is an apocalyptic number.

256451098 is a deficient number, since it is larger than the sum of its proper divisors (129439994).

256451098 is a wasteful number, since it uses less digits than its factorization.

256451098 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404816.

The product of its (nonzero) digits is 86400, while the sum is 40.

The square root of 256451098 is about 16014.0906079615. The cubic root of 256451098 is about 635.3331568565. Note that the first 3 decimals are identical.

The spelling of 256451098 in words is "two hundred fifty-six million, four hundred fifty-one thousand, ninety-eight".