20950036 has 6 divisors (see below), whose sum is σ = 36662570. Its totient is φ = 10475016.

The previous prime is 20950031. The next prime is 20950037. The reversal of 20950036 is 63005902.

It can be written as a sum of positive squares in only one way, i.e., 14976900 + 5973136 = 3870^2 + 2444^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20950031) 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 as a sum of consecutive naturals, namely, 2618751 + ... + 2618758.

Almost surely, 2^20950036 is an apocalyptic number.

It is an amenable number.

20950036 is a deficient number, since it is larger than the sum of its proper divisors (15712534).

20950036 is a wasteful number, since it uses less digits than its factorization.

20950036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5237513 (or 5237511 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 20950036 is about 4577.1209291431. The cubic root of 20950036 is about 275.6734392956.

Adding to 20950036 its reverse (63005902), we get a palindrome (83955938).

The spelling of 20950036 in words is "twenty million, nine hundred fifty thousand, thirty-six".