256402030 has 8 divisors (see below), whose sum is σ = 461523672. Its totient is φ = 102560808.

The previous prime is 256402019. The next prime is 256402039. The reversal of 256402030 is 30204652.

It is a happy number.

256402030 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 junction number, because it is equal to n+sod(n) for n = 256401992 and 256402010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256402039) 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, 12820092 + ... + 12820111.

It is an arithmetic number, because the mean of its divisors is an integer number (57690459).

Almost surely, 2^256402030 is an apocalyptic number.

256402030 is a deficient number, since it is larger than the sum of its proper divisors (205121642).

256402030 is a wasteful number, since it uses less digits than its factorization.

256402030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25640210.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 256402030 is about 16012.5585088705. The cubic root of 256402030 is about 635.2926338406.

Adding to 256402030 its reverse (30204652), we get a palindrome (286606682).

The spelling of 256402030 in words is "two hundred fifty-six million, four hundred two thousand, thirty".