20474031236 has 6 divisors (see below), whose sum is σ = 35829554670. Its totient is φ = 10237015616.

The previous prime is 20474031157. The next prime is 20474031247. The reversal of 20474031236 is 63213047402.

It can be written as a sum of positive squares in only one way, i.e., 15340308736 + 5133722500 = 123856^2 + 71650^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2559253901 + ... + 2559253908.

It is an arithmetic number, because the mean of its divisors is an integer number (5971592445).

Almost surely, 2^20474031236 is an apocalyptic number.

It is an amenable number.

20474031236 is a deficient number, since it is larger than the sum of its proper divisors (15355523434).

20474031236 is a wasteful number, since it uses less digits than its factorization.

20474031236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5118507813 (or 5118507811 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 32.

Adding to 20474031236 its reverse (63213047402), we get a palindrome (83687078638).

The spelling of 20474031236 in words is "twenty billion, four hundred seventy-four million, thirty-one thousand, two hundred thirty-six".