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22714381 = 173131297
BaseRepresentation
bin101011010100…
…1100000001101
31120202000021101
41112221200031
521303330011
62130503101
7364032454
oct126514015
946660241
1022714381
1111904718
127734a91
134923a81
143033b9b
151eda2c1
hex15a980d

22714381 has 4 divisors (see below), whose sum is σ = 22845852. Its totient is φ = 22582912.

The previous prime is 22714379. The next prime is 22714399. The reversal of 22714381 is 18341722.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11764900 + 10949481 = 3430^2 + 3309^2 .

It is a cyclic number.

It is not a de Polignac number, because 22714381 - 21 = 22714379 is a prime.

It is a super-2 number, since 2×227143812 = 1031886208426322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22712381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65476 + ... + 65821.

It is an arithmetic number, because the mean of its divisors is an integer number (5711463).

Almost surely, 222714381 is an apocalyptic number.

It is an amenable number.

22714381 is a deficient number, since it is larger than the sum of its proper divisors (131471).

22714381 is a wasteful number, since it uses less digits than its factorization.

22714381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131470.

The product of its digits is 2688, while the sum is 28.

The square root of 22714381 is about 4765.9606586710. The cubic root of 22714381 is about 283.2045992648.

The spelling of 22714381 in words is "twenty-two million, seven hundred fourteen thousand, three hundred eighty-one".

Divisors: 1 173 131297 22714381