256286130 has 32 divisors (see below), whose sum is σ = 618192000. Its totient is φ = 67997952.

The previous prime is 256286099. The next prime is 256286131. The reversal of 256286130 is 31682652.

It is a junction number, because it is equal to n+sod(n) for n = 256286091 and 256286100.

It is not an unprimeable number, because it can be changed into a prime (256286131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15495 + ... + 27434.

It is an arithmetic number, because the mean of its divisors is an integer number (19318500).

Almost surely, 2^256286130 is an apocalyptic number.

256286130 is an abundant number, since it is smaller than the sum of its proper divisors (361905870).

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

256286130 is a wasteful number, since it uses less digits than its factorization.

256286130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43138.

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 256286130 is about 16008.9390654097. The cubic root of 256286130 is about 635.1968968018.

The spelling of 256286130 in words is "two hundred fifty-six million, two hundred eighty-six thousand, one hundred thirty".