207472321 has 12 divisors (see below), whose sum is σ = 242360580. Its totient is φ = 177085440.

The previous prime is 207472289. The next prime is 207472337. The reversal of 207472321 is 123274702.

207472321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 65028096 + 142444225 = 8064^2 + 11935^2 .

It is not a de Polignac number, because 207472321 - 2⁵ = 207472289 is a prime.

It is a super-2 number, since 2×207472321² = 86089527962254082, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 207472321.

It is not an unprimeable number, because it can be changed into a prime (207475321) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3025 + ... + 20593.

It is an arithmetic number, because the mean of its divisors is an integer number (20196715).

Almost surely, 2^207472321 is an apocalyptic number.

It is an amenable number.

207472321 is a deficient number, since it is larger than the sum of its proper divisors (34888259).

207472321 is a wasteful number, since it uses less digits than its factorization.

207472321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17824 (or 17817 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 28.

The square root of 207472321 is about 14403.8995067308. The cubic root of 207472321 is about 591.9977486903.

The spelling of 207472321 in words is "two hundred seven million, four hundred seventy-two thousand, three hundred twenty-one".