20522530 has 16 divisors (see below), whose sum is σ = 42217920. Its totient is φ = 7036272.

The previous prime is 20522521. The next prime is 20522533. The reversal of 20522530 is 3522502.

It is a junction number, because it is equal to n+sod(n) for n = 20522498 and 20522507.

It is not an unprimeable number, because it can be changed into a prime (20522533) 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, 146520 + ... + 146659.

It is an arithmetic number, because the mean of its divisors is an integer number (2638620).

Almost surely, 2^20522530 is an apocalyptic number.

20522530 is an abundant number, since it is smaller than the sum of its proper divisors (21695390).

20522530 is a wasteful number, since it uses less digits than its factorization.

20522530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293193.

The product of its (nonzero) digits is 600, while the sum is 19.

The square root of 20522530 is about 4530.1799081273. The cubic root of 20522530 is about 273.7854092628.

The spelling of 20522530 in words is "twenty million, five hundred twenty-two thousand, five hundred thirty".