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22470061 = 31172251
BaseRepresentation
bin101010110110…
…1110110101101
31120021121010111
41111231312231
521223020221
62121340021
7361664245
oct125556655
946247114
1022470061
11117580a9
127637611
1348697c3
142dacb25
151e8cbe1
hex156ddad

22470061 has 4 divisors (see below), whose sum is σ = 22542624. Its totient is φ = 22397500.

The previous prime is 22470053. The next prime is 22470067. The reversal of 22470061 is 16007422.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22470061 - 23 = 22470053 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22470067) 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, 35815 + ... + 36436.

It is an arithmetic number, because the mean of its divisors is an integer number (5635656).

Almost surely, 222470061 is an apocalyptic number.

It is an amenable number.

22470061 is a deficient number, since it is larger than the sum of its proper divisors (72563).

22470061 is an equidigital number, since it uses as much as digits as its factorization.

22470061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72562.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 22470061 is about 4740.2595920477. The cubic root of 22470061 is about 282.1855367395.

Adding to 22470061 its reverse (16007422), we get a palindrome (38477483).

The spelling of 22470061 in words is "twenty-two million, four hundred seventy thousand, sixty-one".

Divisors: 1 311 72251 22470061