40180738 has 16 divisors (see below), whose sum is σ = 66492216. Its totient is φ = 18092160.

The previous prime is 40180727. The next prime is 40180757. The reversal of 40180738 is 83708104.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 9566649 + 30614089 = 3093^2 + 5533^2 .

It is a super-2 number, since 2×40180738² = 3228983412449288, which contains 22 as substring.

It is a plaindrome in base 12.

It is a zygodrome in base 12.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17781 + ... + 19912.

Almost surely, 2^40180738 is an apocalyptic number.

40180738 is a deficient number, since it is larger than the sum of its proper divisors (26311478).

40180738 is a wasteful number, since it uses less digits than its factorization.

40180738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37749.

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 40180738 is about 6338.8278096191. The cubic root of 40180738 is about 342.5095115195.

The spelling of 40180738 in words is "forty million, one hundred eighty thousand, seven hundred thirty-eight".