20730410 has 8 divisors (see below), whose sum is σ = 37314756. Its totient is φ = 8292160.

The previous prime is 20730407. The next prime is 20730421. The reversal of 20730410 is 1403702.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 17884441 + 2845969 = 4229^2 + 1687^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1036511 + ... + 1036530.

Almost surely, 2^20730410 is an apocalyptic number.

20730410 is a deficient number, since it is larger than the sum of its proper divisors (16584346).

20730410 is a wasteful number, since it uses less digits than its factorization.

20730410 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2073048.

The product of its (nonzero) digits is 168, while the sum is 17.

The square root of 20730410 is about 4553.0659999609. The cubic root of 20730410 is about 274.7067286769.

The spelling of 20730410 in words is "twenty million, seven hundred thirty thousand, four hundred ten".