40730072 has 16 divisors (see below), whose sum is σ = 80388600. Its totient is φ = 19293120.

The previous prime is 40730069. The next prime is 40730077. The reversal of 40730072 is 27003704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40730077) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 133829 + ... + 134132.

Almost surely, 2^40730072 is an apocalyptic number.

It is an amenable number.

40730072 is a deficient number, since it is larger than the sum of its proper divisors (39658528).

40730072 is a wasteful number, since it uses less digits than its factorization.

40730072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267986 (or 267982 counting only the distinct ones).

The product of its (nonzero) digits is 1176, while the sum is 23.

The square root of 40730072 is about 6382.0115951007. The cubic root of 40730072 is about 344.0633333904.

Adding to 40730072 its reverse (27003704), we get a palindrome (67733776).

The spelling of 40730072 in words is "forty million, seven hundred thirty thousand, seventy-two".