40323636 has 48 divisors (see below), whose sum is σ = 107378880. Its totient is φ = 13076640.

The previous prime is 40323631. The next prime is 40323649. The reversal of 40323636 is 63632304.

40323636 is a `hidden beast` number, since 4 + 0 + 3 + 23 + 636 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40323631) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1050 + ... + 9041.

It is an arithmetic number, because the mean of its divisors is an integer number (2237060).

Almost surely, 2^40323636 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40323636, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53689440).

40323636 is an abundant number, since it is smaller than the sum of its proper divisors (67055244).

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

40323636 is a wasteful number, since it uses less digits than its factorization.

40323636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10141 (or 10133 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 27.

The square root of 40323636 is about 6350.0894481889. The cubic root of 40323636 is about 342.9150625364.

The spelling of 40323636 in words is "forty million, three hundred twenty-three thousand, six hundred thirty-six".