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22693469 = 37613337
BaseRepresentation
bin101011010010…
…0011001011101
31120200221120212
41112210121131
521302142334
62130222205
7363614501
oct126443135
946627525
1022693469
111189aa37
127724965
1349173b6
14302a301
151ed3ece
hex15a465d

22693469 has 4 divisors (see below), whose sum is σ = 23306844. Its totient is φ = 22080096.

The previous prime is 22693409. The next prime is 22693471. The reversal of 22693469 is 96439622.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 96439622 = 248219811.

It can be written as a sum of positive squares in 2 ways, for example, as 8352100 + 14341369 = 2890^2 + 3787^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-22693469 is a prime.

It is a super-2 number, since 2×226934692 = 1029987070507922, 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 (22693409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 306632 + ... + 306705.

It is an arithmetic number, because the mean of its divisors is an integer number (5826711).

Almost surely, 222693469 is an apocalyptic number.

It is an amenable number.

22693469 is a deficient number, since it is larger than the sum of its proper divisors (613375).

22693469 is an equidigital number, since it uses as much as digits as its factorization.

22693469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 613374.

The product of its digits is 139968, while the sum is 41.

The square root of 22693469 is about 4763.7662621082. The cubic root of 22693469 is about 283.1176617869.

The spelling of 22693469 in words is "twenty-two million, six hundred ninety-three thousand, four hundred sixty-nine".

Divisors: 1 37 613337 22693469