41640426 has 64 divisors (see below), whose sum is σ = 96307200. Its totient is φ = 13326768.

The previous prime is 41640407. The next prime is 41640437. The reversal of 41640426 is 62404614.

It is a super-2 number, since 2×41640426² = 3467850154922952, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 41640426.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 183325 + ... + 183551.

It is an arithmetic number, because the mean of its divisors is an integer number (1504800).

Almost surely, 2^41640426 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 41640426, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48153600).

41640426 is an abundant number, since it is smaller than the sum of its proper divisors (54666774).

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

41640426 is a wasteful number, since it uses less digits than its factorization.

41640426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360 (or 354 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 41640426 is about 6452.9393302587. The cubic root of 41640426 is about 346.6078448439.

The spelling of 41640426 in words is "forty-one million, six hundred forty thousand, four hundred twenty-six".