256474632 has 64 divisors (see below), whose sum is σ = 657823680. Its totient is φ = 83296512.

The previous prime is 256474619. The next prime is 256474657. The reversal of 256474632 is 236474652.

256474632 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 206718 + ... + 207954.

It is an arithmetic number, because the mean of its divisors is an integer number (10278495).

Almost surely, 2^256474632 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 256474632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (328911840).

256474632 is an abundant number, since it is smaller than the sum of its proper divisors (401349048).

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

256474632 is a wasteful number, since it uses less digits than its factorization.

256474632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1462 (or 1458 counting only the distinct ones).

The product of its digits is 241920, while the sum is 39.

The square root of 256474632 is about 16014.8253815020. The cubic root of 256474632 is about 635.3525906762.

The spelling of 256474632 in words is "two hundred fifty-six million, four hundred seventy-four thousand, six hundred thirty-two".