40730 has 8 divisors (see below), whose sum is σ = 73332. Its totient is φ = 16288.

The previous prime is 40709. The next prime is 40739. The reversal of 40730 is 3704.

It can be written as a sum of positive squares in 2 ways, for example, as 37249 + 3481 = 193^2 + 59^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (40739) 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, 2027 + ... + 2046.

2⁴⁰⁷³⁰ is an apocalyptic number.

40730 is a deficient number, since it is larger than the sum of its proper divisors (32602).

40730 is a wasteful number, since it uses less digits than its factorization.

40730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4080.

The product of its (nonzero) digits is 84, while the sum is 14.

The square root of 40730 is about 201.8167485617. The cubic root of 40730 is about 34.4063130653.

The spelling of 40730 in words is "forty thousand, seven hundred thirty".