40786506 has 48 divisors (see below), whose sum is σ = 92761344. Its totient is φ = 12936672.

The previous prime is 40786481. The next prime is 40786517. The reversal of 40786506 is 60568704.

It is a happy number.

40786506 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

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 23 ways as a sum of consecutive naturals, for example, 30651 + ... + 31953.

It is an arithmetic number, because the mean of its divisors is an integer number (1932528).

Almost surely, 2^40786506 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40786506, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46380672).

40786506 is an abundant number, since it is smaller than the sum of its proper divisors (51974838).

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

40786506 is a wasteful number, since it uses less digits than its factorization.

40786506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1395 (or 1392 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 40786506 is about 6386.4313978935. The cubic root of 40786506 is about 344.2221669692. Note that the first 3 decimals are identical.

The spelling of 40786506 in words is "forty million, seven hundred eighty-six thousand, five hundred six".