20522634 has 16 divisors (see below), whose sum is σ = 44776800. Its totient is φ = 6218960.

The previous prime is 20522617. The next prime is 20522639. The reversal of 20522634 is 43622502.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20522639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 155409 + ... + 155540.

It is an arithmetic number, because the mean of its divisors is an integer number (2798550).

Almost surely, 2^20522634 is an apocalyptic number.

20522634 is an abundant number, since it is smaller than the sum of its proper divisors (24254166).

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

20522634 is a wasteful number, since it uses less digits than its factorization.

20522634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310965.

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 20522634 is about 4530.1913866856. The cubic root of 20522634 is about 273.7858717405.

The spelling of 20522634 in words is "twenty million, five hundred twenty-two thousand, six hundred thirty-four".