20522012 has 24 divisors (see below), whose sum is σ = 41158656. Its totient is φ = 8770608.

The previous prime is 20521987. The next prime is 20522023. The reversal of 20522012 is 21022502.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12173 + ... + 13755.

It is an arithmetic number, because the mean of its divisors is an integer number (1714944).

Almost surely, 2^20522012 is an apocalyptic number.

It is an amenable number.

20522012 is an abundant number, since it is smaller than the sum of its proper divisors (20636644).

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

20522012 is a wasteful number, since it uses less digits than its factorization.

20522012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2057 (or 2055 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 20522012 is about 4530.1227356441. The cubic root of 20522012 is about 273.7831057451.

Adding to 20522012 its reverse (21022502), we get a palindrome (41544514).

The spelling of 20522012 in words is "twenty million, five hundred twenty-two thousand, twelve".