2447172040 has 16 divisors (see below), whose sum is σ = 5506137180. Its totient is φ = 978868800.

The previous prime is 2447172001. The next prime is 2447172041. The reversal of 2447172040 is 402717442.

It can be written as a sum of positive squares in 2 ways, for example, as 1999341796 + 447830244 = 44714^2 + 21162^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2447171993 and 2447172011.

It is not an unprimeable number, because it can be changed into a prime (2447172041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30589611 + ... + 30589690.

Almost surely, 2^2447172040 is an apocalyptic number.

2447172040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2447172040 is an abundant number, since it is smaller than the sum of its proper divisors (3058965140).

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

2447172040 is a wasteful number, since it uses less digits than its factorization.

2447172040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61179312 (or 61179308 counting only the distinct ones).

The product of its (nonzero) digits is 12544, while the sum is 31.

The square root of 2447172040 is about 49468.8997249787. The cubic root of 2447172040 is about 1347.5808600995.

Adding to 2447172040 its reverse (402717442), we get a palindrome (2849889482).

The spelling of 2447172040 in words is "two billion, four hundred forty-seven million, one hundred seventy-two thousand, forty".