40786650 has 72 divisors (see below), whose sum is σ = 110333340. Its totient is φ = 10801920.

The previous prime is 40786637. The next prime is 40786651. The reversal of 40786650 is 5668704.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 4678569 + 36108081 = 2163^2 + 6009^2 .

It is not an unprimeable number, because it can be changed into a prime (40786651) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 104656 + ... + 105044.

Almost surely, 2^40786650 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40786650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55166670).

40786650 is an abundant number, since it is smaller than the sum of its proper divisors (69546690).

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

40786650 is a wasteful number, since it uses less digits than its factorization.

40786650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 640 (or 632 counting only the distinct ones).

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

The square root of 40786650 is about 6386.4426717853. The cubic root of 40786650 is about 344.2225720700. Note that the first 3 decimals are identical.

The spelling of 40786650 in words is "forty million, seven hundred eighty-six thousand, six hundred fifty".