20070472 has 24 divisors (see below), whose sum is σ = 39980610. Its totient is φ = 9443840.

The previous prime is 20070469. The next prime is 20070473. The reversal of 20070472 is 27407002.

It can be written as a sum of positive squares in 3 ways, for example, as 19945156 + 125316 = 4466^2 + 354^2 .

It is not an unprimeable number, because it can be changed into a prime (20070473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2029 + ... + 6652.

Almost surely, 2^20070472 is an apocalyptic number.

It is an amenable number.

20070472 is a deficient number, since it is larger than the sum of its proper divisors (19910138).

20070472 is a wasteful number, since it uses less digits than its factorization.

20070472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8721 (or 8700 counting only the distinct ones).

The product of its (nonzero) digits is 784, while the sum is 22.

The square root of 20070472 is about 4480.0080357071. The cubic root of 20070472 is about 271.7602053263.

Adding to 20070472 its reverse (27407002), we get a palindrome (47477474).

The spelling of 20070472 in words is "twenty million, seventy thousand, four hundred seventy-two".