411640 has 32 divisors (see below), whose sum is σ = 952560. Its totient is φ = 160000.

The previous prime is 411637. The next prime is 411641. The reversal of 411640 is 46114.

411640 = T₁₂₃ + T₁₂₄ + ... + T₁₆₂.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (411641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1515 + ... + 1765.

2⁴¹¹⁶⁴⁰ is an apocalyptic number.

411640 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 411640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (476280).

411640 is an abundant number, since it is smaller than the sum of its proper divisors (540920).

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

411640 is a wasteful number, since it uses less digits than its factorization.

411640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303 (or 299 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 411640 is about 641.5917705208. The cubic root of 411640 is about 74.3885094213.

Adding to 411640 its reverse (46114), we get a palindrome (457754).

It can be divided in two parts, 41 and 1640, that added together give a square (1681 = 41²).

The spelling of 411640 in words is "four hundred eleven thousand, six hundred forty".