4256240 has 40 divisors (see below), whose sum is σ = 10030608. Its totient is φ = 1679360.

The previous prime is 4256233. The next prime is 4256249. The reversal of 4256240 is 426524.

4256240 is nontrivially palindromic in base 15.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4256249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6320 + ... + 6960.

Almost surely, 2^4256240 is an apocalyptic number.

4256240 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 4256240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5015304).

4256240 is an abundant number, since it is smaller than the sum of its proper divisors (5774368).

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

4256240 is a wasteful number, since it uses less digits than its factorization.

4256240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 737 (or 731 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 4256240 is about 2063.0656800015. The cubic root of 4256240 is about 162.0598265037.

The spelling of 4256240 in words is "four million, two hundred fifty-six thousand, two hundred forty".