40729730 has 32 divisors (see below), whose sum is σ = 78831360. Its totient is φ = 15102720.

The previous prime is 40729727. The next prime is 40729763. The reversal of 40729730 is 3792704.

It is a happy number.

40729730 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6650 + ... + 11210.

It is an arithmetic number, because the mean of its divisors is an integer number (2463480).

Almost surely, 2^40729730 is an apocalyptic number.

40729730 is a deficient number, since it is larger than the sum of its proper divisors (38101630).

40729730 is a wasteful number, since it uses less digits than its factorization.

40729730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4634.

The product of its (nonzero) digits is 10584, while the sum is 32.

The square root of 40729730 is about 6381.9848009847. The cubic root of 40729730 is about 344.0623703838.

The spelling of 40729730 in words is "forty million, seven hundred twenty-nine thousand, seven hundred thirty".