4256040 has 64 divisors (see below), whose sum is σ = 13219200. Its totient is φ = 1094912.

The previous prime is 4256029. The next prime is 4256051. The reversal of 4256040 is 406524.

It is a happy number.

4256040 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (4256029) and next prime (4256051).

It is a super-2 number, since 2×4256040² = 36227752963200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 4255998 and 4256016.

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, 2869 + ... + 4091.

It is an arithmetic number, because the mean of its divisors is an integer number (206550).

Almost surely, 2^4256040 is an apocalyptic number.

4256040 is a gapful number since it is divisible by the number (40) 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 4256040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6609600).

4256040 is an abundant number, since it is smaller than the sum of its proper divisors (8963160).

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

4256040 is a wasteful number, since it uses less digits than its factorization.

4256040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1266 (or 1262 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 4256040 is about 2063.0172078778. The cubic root of 4256040 is about 162.0572880760.

The spelling of 4256040 in words is "four million, two hundred fifty-six thousand, forty".