20001472 has 28 divisors (see below), whose sum is σ = 40370760. Its totient is φ = 9829376.

The previous prime is 20001451. The next prime is 20001491. The reversal of 20001472 is 27410002.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1128 + ... + 6424.

Almost surely, 2^20001472 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20001472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20185380).

20001472 is an abundant number, since it is smaller than the sum of its proper divisors (20369288).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20001472 is an equidigital number, since it uses as much as digits as its factorization.

20001472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5368 (or 5358 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 16.

The square root of 20001472 is about 4472.3005265747. The cubic root of 20001472 is about 271.4484208673.

Adding to 20001472 its reverse (27410002), we get a palindrome (47411474).

The spelling of 20001472 in words is "twenty million, one thousand, four hundred seventy-two".