256376040 has 64 divisors (see below), whose sum is σ = 771068160. Its totient is φ = 68194560.

The previous prime is 256375967. The next prime is 256376047. The reversal of 256376040 is 40673652.

It is a junction number, because it is equal to n+sod(n) for n = 256375992 and 256376010.

It is not an unprimeable number, because it can be changed into a prime (256376047) 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, 49242 + ... + 54198.

It is an arithmetic number, because the mean of its divisors is an integer number (12047940).

Almost surely, 2^256376040 is an apocalyptic number.

256376040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

256376040 is an abundant number, since it is smaller than the sum of its proper divisors (514692120).

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

256376040 is a wasteful number, since it uses less digits than its factorization.

256376040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5402 (or 5398 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 33.

The square root of 256376040 is about 16011.7469377954. The cubic root of 256376040 is about 635.2711677944.

The spelling of 256376040 in words is "two hundred fifty-six million, three hundred seventy-six thousand, forty".