20735534 has 8 divisors (see below), whose sum is σ = 31265040. Its totient is φ = 10313856.

The previous prime is 20735521. The next prime is 20735537. The reversal of 20735534 is 43553702.

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

It is a junction number, because it is equal to n+sod(n) for n = 20735497 and 20735506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20735537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26474 + ... + 27245.

It is an arithmetic number, because the mean of its divisors is an integer number (3908130).

Almost surely, 2^20735534 is an apocalyptic number.

20735534 is a deficient number, since it is larger than the sum of its proper divisors (10529506).

20735534 is a wasteful number, since it uses less digits than its factorization.

20735534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53914.

The product of its (nonzero) digits is 12600, while the sum is 29.

The square root of 20735534 is about 4553.6286629456. The cubic root of 20735534 is about 274.7293601849.

The spelling of 20735534 in words is "twenty million, seven hundred thirty-five thousand, five hundred thirty-four".