20522064 has 40 divisors (see below), whose sum is σ = 53275360. Its totient is φ = 6807168.

The previous prime is 20522059. The next prime is 20522069. The reversal of 20522064 is 46022502.

It is an interprime number because it is at equal distance from previous prime (20522059) and next prime (20522069).

It is a super-2 number, since 2×20522064² = 842310221640192, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20522064.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20522069) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10059 + ... + 11925.

It is an arithmetic number, because the mean of its divisors is an integer number (1331884).

Almost surely, 2^20522064 is an apocalyptic number.

20522064 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20522064 is an abundant number, since it is smaller than the sum of its proper divisors (32753296).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20522064 is a wasteful number, since it uses less digits than its factorization.

20522064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2107 (or 2101 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 20522064 is about 4530.1284749994. The cubic root of 20522064 is about 273.7833369880.

Adding to 20522064 its reverse (46022502), we get a palindrome (66544566).

The spelling of 20522064 in words is "twenty million, five hundred twenty-two thousand, sixty-four".