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22813029 = 33844927
BaseRepresentation
bin101011100000…
…1100101100101
31120221000121000
41113001211211
521320004104
62132543513
7364623201
oct127014545
946830530
1022813029
1111971848
127781b99
134959945
14305bb01
152009639
hex15c1965

22813029 has 8 divisors (see below), whose sum is σ = 33797120. Its totient is φ = 15208668.

The previous prime is 22813019. The next prime is 22813039. The reversal of 22813029 is 92031822.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (22813019) and next prime (22813039).

It is not a de Polignac number, because 22813029 - 217 = 22681957 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 844927 = 22813029 / (2 + 2 + 8 + 1 + 3 + 0 + 2 + 9).

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 22812993 and 22813011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22813009) 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, 422437 + ... + 422490.

It is an arithmetic number, because the mean of its divisors is an integer number (4224640).

Almost surely, 222813029 is an apocalyptic number.

It is an amenable number.

22813029 is a deficient number, since it is larger than the sum of its proper divisors (10984091).

22813029 is an equidigital number, since it uses as much as digits as its factorization.

22813029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 844936 (or 844930 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 22813029 is about 4776.2986715657. The cubic root of 22813029 is about 283.6139907212.

The spelling of 22813029 in words is "twenty-two million, eight hundred thirteen thousand, twenty-nine".

Divisors: 1 3 9 27 844927 2534781 7604343 22813029