256241460 has 96 divisors (see below), whose sum is σ = 731566080. Its totient is φ = 67005568.

The previous prime is 256241449. The next prime is 256241471. The reversal of 256241460 is 64142652.

It is an interprime number because it is at equal distance from previous prime (256241449) and next prime (256241471).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1072021 + ... + 1072259.

It is an arithmetic number, because the mean of its divisors is an integer number (7620480).

Almost surely, 2^256241460 is an apocalyptic number.

256241460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 256241460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (365783040).

256241460 is an abundant number, since it is smaller than the sum of its proper divisors (475324620).

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

256241460 is a wasteful number, since it uses less digits than its factorization.

256241460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 525 (or 523 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 256241460 is about 16007.5438465743. The cubic root of 256241460 is about 635.1599902733.

The spelling of 256241460 in words is "two hundred fifty-six million, two hundred forty-one thousand, four hundred sixty".