40173140 has 36 divisors (see below), whose sum is σ = 98139636. Its totient is φ = 13773312.

The previous prime is 40173103. The next prime is 40173151. The reversal of 40173140 is 4137104.

It can be written as a sum of positive squares in 2 ways, for example, as 9746884 + 30426256 = 3122^2 + 5516^2 .

It is a super-2 number, since 2×40173140² = 3227762354919200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19517 + ... + 21476.

It is an arithmetic number, because the mean of its divisors is an integer number (2726101).

Almost surely, 2^40173140 is an apocalyptic number.

It is an amenable number.

40173140 is an abundant number, since it is smaller than the sum of its proper divisors (57966496).

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

40173140 is a wasteful number, since it uses less digits than its factorization.

40173140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41016 (or 41007 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 40173140 is about 6338.2284591201. The cubic root of 40173140 is about 342.4879211468.

The spelling of 40173140 in words is "forty million, one hundred seventy-three thousand, one hundred forty".