20522413 has 8 divisors (see below), whose sum is σ = 21957920. Its totient is φ = 19122480.

The previous prime is 20522363. The next prime is 20522419. The reversal of 20522413 is 31422502.

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

It is a cyclic number.

It is not a de Polignac number, because 20522413 - 2²¹ = 18425261 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20522419) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 7695 + ... + 10012.

It is an arithmetic number, because the mean of its divisors is an integer number (2744740).

Almost surely, 2^20522413 is an apocalyptic number.

It is an amenable number.

20522413 is a deficient number, since it is larger than the sum of its proper divisors (1435507).

20522413 is a wasteful number, since it uses less digits than its factorization.

20522413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17787.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 20522413 is about 4530.1669947144. The cubic root of 20522413 is about 273.7848889736.

Adding to 20522413 its reverse (31422502), we get a palindrome (51944915).

It can be divided in two parts, 2052 and 2413, that added together give a triangular number (4465 = T₉₄).

The spelling of 20522413 in words is "twenty million, five hundred twenty-two thousand, four hundred thirteen".