256274148 has 96 divisors (see below), whose sum is σ = 670602240. Its totient is φ = 75640320.

The previous prime is 256274143. The next prime is 256274153. The reversal of 256274148 is 841472652.

It is an interprime number because it is at equal distance from previous prime (256274143) and next prime (256274153).

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (256274141) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 952558 + ... + 952826.

It is an arithmetic number, because the mean of its divisors is an integer number (6985440).

Almost surely, 2^256274148 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 256274148, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (335301120).

256274148 is an abundant number, since it is smaller than the sum of its proper divisors (414328092).

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

256274148 is a wasteful number, since it uses less digits than its factorization.

256274148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 517 (or 515 counting only the distinct ones).

The product of its digits is 107520, while the sum is 39.

The square root of 256274148 is about 16008.5648326138. The cubic root of 256274148 is about 635.1869976475.

The spelling of 256274148 in words is "two hundred fifty-six million, two hundred seventy-four thousand, one hundred forty-eight".