20803413 has 16 divisors (see below), whose sum is σ = 28290240. Its totient is φ = 13595904.

The previous prime is 20803399. The next prime is 20803417. The reversal of 20803413 is 31430802.

It is a happy number.

It is not a de Polignac number, because 20803413 - 2¹⁴ = 20787029 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20803413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20803417) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36670 + ... + 37232.

It is an arithmetic number, because the mean of its divisors is an integer number (1768140).

Almost surely, 2^20803413 is an apocalyptic number.

It is an amenable number.

20803413 is a deficient number, since it is larger than the sum of its proper divisors (7486827).

20803413 is a wasteful number, since it uses less digits than its factorization.

20803413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 788.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 20803413 is about 4561.0758599260. The cubic root of 20803413 is about 275.0288146115.

The spelling of 20803413 in words is "twenty million, eight hundred three thousand, four hundred thirteen".