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10472221 = 173716649
BaseRepresentation
bin100111111100…
…101100011101
3201201001012001
4213330230131
510140102341
61012242301
7155004154
oct47745435
921631161
1010472221
115a02a31
123610391
1322287a6
14156859b
15dbcd31
hex9fcb1d

10472221 has 8 divisors (see below), whose sum is σ = 11388600. Its totient is φ = 9589248.

The previous prime is 10472213. The next prime is 10472227. The reversal of 10472221 is 12227401.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 6528025 + 3944196 = 2555^2 + 1986^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10472221 - 23 = 10472213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10472227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7696 + ... + 8953.

It is an arithmetic number, because the mean of its divisors is an integer number (1423575).

Almost surely, 210472221 is an apocalyptic number.

It is an amenable number.

10472221 is a deficient number, since it is larger than the sum of its proper divisors (916379).

10472221 is a wasteful number, since it uses less digits than its factorization.

10472221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16703.

The product of its (nonzero) digits is 224, while the sum is 19.

The square root of 10472221 is about 3236.0811176483. The cubic root of 10472221 is about 218.7826774584.

Adding to 10472221 its reverse (12227401), we get a palindrome (22699622).

The spelling of 10472221 in words is "ten million, four hundred seventy-two thousand, two hundred twenty-one".

Divisors: 1 17 37 629 16649 283033 616013 10472221