20350472 has 8 divisors (see below), whose sum is σ = 38157150. Its totient is φ = 10175232.

The previous prime is 20350471. The next prime is 20350487. The reversal of 20350472 is 27405302.

It can be written as a sum of positive squares in only one way, i.e., 16532356 + 3818116 = 4066^2 + 1954^2 .

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

It is not an unprimeable number, because it can be changed into a prime (20350471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1271897 + ... + 1271912.

Almost surely, 2^20350472 is an apocalyptic number.

It is an amenable number.

20350472 is a deficient number, since it is larger than the sum of its proper divisors (17806678).

20350472 is a wasteful number, since it uses less digits than its factorization.

20350472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2543815 (or 2543811 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 23.

The square root of 20350472 is about 4511.1497425823. The cubic root of 20350472 is about 273.0181349123.

Adding to 20350472 its reverse (27405302), we get a palindrome (47755774).

The spelling of 20350472 in words is "twenty million, three hundred fifty thousand, four hundred seventy-two".