20413606 has 4 divisors (see below), whose sum is σ = 30620412. Its totient is φ = 10206802.

The previous prime is 20413597. The next prime is 20413607. The reversal of 20413606 is 60631402.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20413607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5103400 + ... + 5103403.

It is an arithmetic number, because the mean of its divisors is an integer number (7655103).

Almost surely, 2^20413606 is an apocalyptic number.

20413606 is a deficient number, since it is larger than the sum of its proper divisors (10206806).

20413606 is a wasteful number, since it uses less digits than its factorization.

20413606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10206805.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 20413606 is about 4518.1418747091. The cubic root of 20413606 is about 273.3001747733.

The spelling of 20413606 in words is "twenty million, four hundred thirteen thousand, six hundred six".