20017474 has 8 divisors (see below), whose sum is σ = 30058380. Its totient is φ = 9998016.

The previous prime is 20017457. The next prime is 20017477. The reversal of 20017474 is 47471002.

It can be written as a sum of positive squares in 2 ways, for example, as 17935225 + 2082249 = 4235^2 + 1443^2 .

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

It is not an unprimeable number, because it can be changed into a prime (20017477) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2779 + ... + 6910.

Almost surely, 2^20017474 is an apocalyptic number.

20017474 is a deficient number, since it is larger than the sum of its proper divisors (10040906).

20017474 is a wasteful number, since it uses less digits than its factorization.

20017474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10724.

The product of its (nonzero) digits is 1568, while the sum is 25.

The square root of 20017474 is about 4474.0891810513. The cubic root of 20017474 is about 271.5207915369.

Adding to 20017474 its reverse (47471002), we get a palindrome (67488476).

The spelling of 20017474 in words is "twenty million, seventeen thousand, four hundred seventy-four".