20020516 has 6 divisors (see below), whose sum is σ = 35035910. Its totient is φ = 10010256.

The previous prime is 20020501. The next prime is 20020531. The reversal of 20020516 is 61502002.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20020501) and next prime (20020531).

It can be written as a sum of positive squares in only one way, i.e., 19713600 + 306916 = 4440^2 + 554^2 .

It is a super-3 number, since 3×20020516³ (a number of 23 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20020516.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2502561 + ... + 2502568.

Almost surely, 2^20020516 is an apocalyptic number.

It is an amenable number.

20020516 is a deficient number, since it is larger than the sum of its proper divisors (15015394).

20020516 is a wasteful number, since it uses less digits than its factorization.

20020516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5005133 (or 5005131 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 20020516 is about 4474.4291255980. The cubic root of 20020516 is about 271.5345449274.

Adding to 20020516 its reverse (61502002), we get a palindrome (81522518).

The spelling of 20020516 in words is "twenty million, twenty thousand, five hundred sixteen".