20361472 has 18 divisors (see below), whose sum is σ = 40643918. Its totient is φ = 10180608.

The previous prime is 20361469. The next prime is 20361479. The reversal of 20361472 is 27416302.

It can be written as a sum of positive squares in only one way, i.e., 20214016 + 147456 = 4496^2 + 384^2 .

It is not an unprimeable number, because it can be changed into a prime (20361479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39513 + ... + 40024.

Almost surely, 2^20361472 is an apocalyptic number.

It is an amenable number.

20361472 is a deficient number, since it is larger than the sum of its proper divisors (20282446).

20361472 is an frugal number, since it uses more digits than its factorization.

20361472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79553 (or 79539 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 20361472 is about 4512.3687792555. The cubic root of 20361472 is about 273.0673173677.

Adding to 20361472 its reverse (27416302), we get a palindrome (47777774).

It can be divided in two parts, 2036 and 1472, that multiplied together give a palindrome (2996992).

The spelling of 20361472 in words is "twenty million, three hundred sixty-one thousand, four hundred seventy-two".