20030536 has 8 divisors (see below), whose sum is σ = 37557270. Its totient is φ = 10015264.

The previous prime is 20030519. The next prime is 20030551. The reversal of 20030536 is 63503002.

It can be written as a sum of positive squares in only one way, i.e., 18576100 + 1454436 = 4310^2 + 1206^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1251901 + ... + 1251916.

Almost surely, 2^20030536 is an apocalyptic number.

It is an amenable number.

20030536 is a deficient number, since it is larger than the sum of its proper divisors (17526734).

20030536 is a wasteful number, since it uses less digits than its factorization.

20030536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2503823 (or 2503819 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 19.

The square root of 20030536 is about 4475.5486814468. The cubic root of 20030536 is about 271.5798371727.

Adding to 20030536 its reverse (63503002), we get a palindrome (83533538).

The spelling of 20030536 in words is "twenty million, thirty thousand, five hundred thirty-six".