40732394 has 16 divisors (see below), whose sum is σ = 62365128. Its totient is φ = 19948032.

The previous prime is 40732387. The next prime is 40732397. The reversal of 40732394 is 49323704.

It can be written as a sum of positive squares in 4 ways, for example, as 32638369 + 8094025 = 5713^2 + 2845^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 40732394.

It is not an unprimeable number, because it can be changed into a prime (40732397) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22034 + ... + 23810.

Almost surely, 2^40732394 is an apocalyptic number.

40732394 is a deficient number, since it is larger than the sum of its proper divisors (21632734).

40732394 is a wasteful number, since it uses less digits than its factorization.

40732394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2009.

The product of its (nonzero) digits is 18144, while the sum is 32.

The square root of 40732394 is about 6382.1935100716. The cubic root of 40732394 is about 344.0698715561.

The spelling of 40732394 in words is "forty million, seven hundred thirty-two thousand, three hundred ninety-four".