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23122741 = 55741513
BaseRepresentation
bin101100000110…
…1001100110101
31121111202102211
41120031030311
521404411431
62143333421
7400353145
oct130151465
947452384
1023122741
1112063504
1278b1271
134a378c5
1430dc925
15206b2b1
hex160d335

23122741 has 4 divisors (see below), whose sum is σ = 23164812. Its totient is φ = 23080672.

The previous prime is 23122733. The next prime is 23122769. The reversal of 23122741 is 14722132.

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 9090225 + 14032516 = 3015^2 + 3746^2 .

It is a cyclic number.

It is not a de Polignac number, because 23122741 - 23 = 23122733 is a prime.

It is a super-2 number, since 2×231227412 = 1069322302706162, 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 (23122241) 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, 20200 + ... + 21313.

It is an arithmetic number, because the mean of its divisors is an integer number (5791203).

Almost surely, 223122741 is an apocalyptic number.

It is an amenable number.

23122741 is a deficient number, since it is larger than the sum of its proper divisors (42071).

23122741 is an equidigital number, since it uses as much as digits as its factorization.

23122741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42070.

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

The square root of 23122741 is about 4808.6111300458. The cubic root of 23122741 is about 284.8916834719.

Adding to 23122741 its reverse (14722132), we get a palindrome (37844873).

The spelling of 23122741 in words is "twenty-three million, one hundred twenty-two thousand, seven hundred forty-one".

Divisors: 1 557 41513 23122741