20070217 has 8 divisors (see below), whose sum is σ = 21295872. Its totient is φ = 18849600.

The previous prime is 20070179. The next prime is 20070229. The reversal of 20070217 is 71207002.

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

It is not a de Polignac number, because 20070217 - 2¹⁵ = 20037449 is a prime.

It is a super-2 number, since 2×20070217² = 805627220854178, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20070194 and 20070203.

It is not an unprimeable number, because it can be changed into a prime (20070257) 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 7 ways as a sum of consecutive naturals, for example, 9792 + ... + 11662.

It is an arithmetic number, because the mean of its divisors is an integer number (2661984).

Almost surely, 2^20070217 is an apocalyptic number.

It is an amenable number.

20070217 is a deficient number, since it is larger than the sum of its proper divisors (1225655).

20070217 is a wasteful number, since it uses less digits than its factorization.

20070217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2519.

The product of its (nonzero) digits is 196, while the sum is 19.

The square root of 20070217 is about 4479.9795758463. The cubic root of 20070217 is about 271.7590543959.

Adding to 20070217 its reverse (71207002), we get a palindrome (91277219).

The spelling of 20070217 in words is "twenty million, seventy thousand, two hundred seventeen".