20611434 has 8 divisors (see below), whose sum is σ = 41222880. Its totient is φ = 6870476.

The previous prime is 20611403. The next prime is 20611439. The reversal of 20611434 is 43411602.

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

20611434 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 20611434.

It is not an unprimeable number, because it can be changed into a prime (20611439) 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, 1717614 + ... + 1717625.

It is an arithmetic number, because the mean of its divisors is an integer number (5152860).

Almost surely, 2^20611434 is an apocalyptic number.

20611434 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20611434 is a wasteful number, since it uses less digits than its factorization.

20611434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3435244.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 20611434 is about 4539.9817180249. The cubic root of 20611434 is about 274.1801876578.

The spelling of 20611434 in words is "twenty million, six hundred eleven thousand, four hundred thirty-four".