20935017 has 40 divisors (see below), whose sum is σ = 33608960. Its totient is φ = 12947040.

The previous prime is 20935009. The next prime is 20935027. The reversal of 20935017 is 71053902.

It is not a de Polignac number, because 20935017 - 2³ = 20935009 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20935027) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 93768 + ... + 93990.

It is an arithmetic number, because the mean of its divisors is an integer number (840224).

Almost surely, 2^20935017 is an apocalyptic number.

20935017 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

20935017 is a deficient number, since it is larger than the sum of its proper divisors (12673943).

20935017 is a wasteful number, since it uses less digits than its factorization.

20935017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315 (or 306 counting only the distinct ones).

The product of its (nonzero) digits is 1890, while the sum is 27.

The square root of 20935017 is about 4575.4799748223. The cubic root of 20935017 is about 275.6075471387.

Adding to 20935017 its reverse (71053902), we get a palindrome (91988919).

The spelling of 20935017 in words is "twenty million, nine hundred thirty-five thousand, seventeen".