20522534 has 8 divisors (see below), whose sum is σ = 30828000. Its totient is φ = 10246536.

The previous prime is 20522533. The next prime is 20522543. The reversal of 20522534 is 43522502.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20522533) 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 3 ways as a sum of consecutive naturals, for example, 5534 + ... + 8465.

It is an arithmetic number, because the mean of its divisors is an integer number (3853500).

Almost surely, 2^20522534 is an apocalyptic number.

20522534 is a deficient number, since it is larger than the sum of its proper divisors (10305466).

20522534 is a wasteful number, since it uses less digits than its factorization.

20522534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14734.

The product of its (nonzero) digits is 2400, while the sum is 23.

The square root of 20522534 is about 4530.1803496108. The cubic root of 20522534 is about 273.7854270505.

The spelling of 20522534 in words is "twenty million, five hundred twenty-two thousand, five hundred thirty-four".