20336072 has 8 divisors (see below), whose sum is σ = 38130150. Its totient is φ = 10168032.

The previous prime is 20336059. The next prime is 20336083. The reversal of 20336072 is 27063302.

It can be written as a sum of positive squares in only one way, i.e., 18783556 + 1552516 = 4334^2 + 1246^2 .

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, 1270997 + ... + 1271012.

Almost surely, 2^20336072 is an apocalyptic number.

It is an amenable number.

20336072 is a deficient number, since it is larger than the sum of its proper divisors (17794078).

20336072 is a wasteful number, since it uses less digits than its factorization.

20336072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2542015 (or 2542011 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 23.

The square root of 20336072 is about 4509.5534146964. The cubic root of 20336072 is about 272.9537238132.

Adding to 20336072 its reverse (27063302), we get a palindrome (47399374).

The spelling of 20336072 in words is "twenty million, three hundred thirty-six thousand, seventy-two".