40838740 has 12 divisors (see below), whose sum is σ = 85761396. Its totient is φ = 16335488.

The previous prime is 40838737. The next prime is 40838753. The reversal of 40838740 is 4783804.

40838740 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 29789764 + 11048976 = 5458^2 + 3324^2 .

It is a junction number, because it is equal to n+sod(n) for n = 40838696 and 40838705.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 1020949 + ... + 1020988.

It is an arithmetic number, because the mean of its divisors is an integer number (7146783).

Almost surely, 2^40838740 is an apocalyptic number.

It is an amenable number.

40838740 is an abundant number, since it is smaller than the sum of its proper divisors (44922656).

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

40838740 is a wasteful number, since it uses less digits than its factorization.

40838740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2041946 (or 2041944 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 34.

The square root of 40838740 is about 6390.5195406946. The cubic root of 40838740 is about 344.3690491317.

The spelling of 40838740 in words is "forty million, eight hundred thirty-eight thousand, seven hundred forty".