40520838 has 16 divisors (see below), whose sum is σ = 82068480. Its totient is φ = 13335816.

The previous prime is 40520791. The next prime is 40520839. The reversal of 40520838 is 83802504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40520839) 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, 42270 + ... + 43217.

It is an arithmetic number, because the mean of its divisors is an integer number (5129280).

Almost surely, 2^40520838 is an apocalyptic number.

40520838 is an abundant number, since it is smaller than the sum of its proper divisors (41547642).

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

40520838 is a wasteful number, since it uses less digits than its factorization.

40520838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85571.

The product of its (nonzero) digits is 7680, while the sum is 30.

The square root of 40520838 is about 6365.5980080429. The cubic root of 40520838 is about 343.4731603352.

The spelling of 40520838 in words is "forty million, five hundred twenty thousand, eight hundred thirty-eight".