256410030 has 32 divisors (see below), whose sum is σ = 618797088. Its totient is φ = 67996800.

The previous prime is 256409999. The next prime is 256410041. The reversal of 256410030 is 30014652.

It is a happy number.

It is a super-2 number, since 2×256410030² = 131492206969201800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 256409979 and 256410006.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18181 + ... + 29040.

It is an arithmetic number, because the mean of its divisors is an integer number (19337409).

Almost surely, 2^256410030 is an apocalyptic number.

256410030 is an abundant number, since it is smaller than the sum of its proper divisors (362387058).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

256410030 is a wasteful number, since it uses less digits than its factorization.

256410030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47412.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 256410030 is about 16012.8083108492. The cubic root of 256410030 is about 635.2992410272.

Adding to 256410030 its reverse (30014652), we get a palindrome (286424682).

The spelling of 256410030 in words is "two hundred fifty-six million, four hundred ten thousand, thirty".