20417034 has 64 divisors (see below), whose sum is σ = 48771072. Its totient is φ = 5625600.

The previous prime is 20417029. The next prime is 20417069. The reversal of 20417034 is 43071402.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 20417034.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 34489 + ... + 35075.

It is an arithmetic number, because the mean of its divisors is an integer number (762048).

Almost surely, 2^20417034 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20417034, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24385536).

20417034 is an abundant number, since it is smaller than the sum of its proper divisors (28354038).

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

20417034 is a wasteful number, since it uses less digits than its factorization.

20417034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 651.

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 20417034 is about 4518.5212182748. The cubic root of 20417034 is about 273.3154720961.

Adding to 20417034 its reverse (43071402), we get a palindrome (63488436).

The spelling of 20417034 in words is "twenty million, four hundred seventeen thousand, thirty-four".