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23822413 = 37643849
BaseRepresentation
bin101101011100…
…0000001001101
31122211022012121
41122320001031
522044304123
62210332541
7406326046
oct132700115
948738177
1023822413
11124a114a
127b8a151
134c21204
1432418cd
15215875d
hex16b804d

23822413 has 4 divisors (see below), whose sum is σ = 24466300. Its totient is φ = 23178528.

The previous prime is 23822399. The next prime is 23822419. The reversal of 23822413 is 31422832.

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 11410884 + 12411529 = 3378^2 + 3523^2 .

It is a cyclic number.

It is not a de Polignac number, because 23822413 - 217 = 23691341 is a prime.

It is a super-2 number, since 2×238224132 = 1135014722285138, 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 (23822419) 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, 321888 + ... + 321961.

It is an arithmetic number, because the mean of its divisors is an integer number (6116575).

Almost surely, 223822413 is an apocalyptic number.

It is an amenable number.

23822413 is a deficient number, since it is larger than the sum of its proper divisors (643887).

23822413 is an equidigital number, since it uses as much as digits as its factorization.

23822413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 643886.

The product of its digits is 2304, while the sum is 25.

The square root of 23822413 is about 4880.8209350477. The cubic root of 23822413 is about 287.7366943047.

The spelling of 23822413 in words is "twenty-three million, eight hundred twenty-two thousand, four hundred thirteen".

Divisors: 1 37 643849 23822413