40071834 has 80 divisors (see below), whose sum is σ = 99316800. Its totient is φ = 11975040.

The previous prime is 40071799. The next prime is 40071847. The reversal of 40071834 is 43817004.

40071834 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 40071798 and 40071807.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 201267 + ... + 201465.

It is an arithmetic number, because the mean of its divisors is an integer number (1241460).

Almost surely, 2^40071834 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40071834, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49658400).

40071834 is an abundant number, since it is smaller than the sum of its proper divisors (59244966).

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

40071834 is a wasteful number, since it uses less digits than its factorization.

40071834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337 (or 328 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 40071834 is about 6330.2317493122. The cubic root of 40071834 is about 342.1997909265.

Adding to 40071834 its reverse (43817004), we get a palindrome (83888838).

The spelling of 40071834 in words is "forty million, seventy-one thousand, eight hundred thirty-four".