20016874 has 4 divisors (see below), whose sum is σ = 30025314. Its totient is φ = 10008436.

The previous prime is 20016847. The next prime is 20016883. The reversal of 20016874 is 47861002.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 13741849 + 6275025 = 3707^2 + 2505^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5004217 + ... + 5004220.

Almost surely, 2^20016874 is an apocalyptic number.

20016874 is a deficient number, since it is larger than the sum of its proper divisors (10008440).

20016874 is a wasteful number, since it uses less digits than its factorization.

20016874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10008439.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 20016874 is about 4474.0221277951. The cubic root of 20016874 is about 271.5180786721.

Adding to 20016874 its reverse (47861002), we get a palindrome (67877876).

The spelling of 20016874 in words is "twenty million, sixteen thousand, eight hundred seventy-four".