40196736 has 80 divisors (see below), whose sum is σ = 119655690. Its totient is φ = 13395456.

The previous prime is 40196731. The next prime is 40196747. The reversal of 40196736 is 63769104.

It can be written as a sum of positive squares in only one way, i.e., 37454400 + 2742336 = 6120^2 + 1656^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 40196736.

It is not an unprimeable number, because it can be changed into a prime (40196731) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 8430 + ... + 12306.

Almost surely, 2^40196736 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 40196736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59827845).

40196736 is an abundant number, since it is smaller than the sum of its proper divisors (79458954).

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

40196736 is an equidigital number, since it uses as much as digits as its factorization.

40196736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3903 (or 3882 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 40196736 is about 6340.0895892724. The cubic root of 40196736 is about 342.5549623199.

It can be divided in two parts, 4019673 and 6, that added together give a cube (4019679 = 159³).

The spelling of 40196736 in words is "forty million, one hundred ninety-six thousand, seven hundred thirty-six".