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23148641 = 294119469
BaseRepresentation
bin101100001001…
…1100001100001
31121120001222002
41120103201201
521411224031
62144053345
7400521515
oct130234141
947501862
1023148641
1112080a0a
127904255
134a46629
143108145
152073ccb
hex1613861

23148641 has 8 divisors (see below), whose sum is σ = 24532200. Its totient is φ = 21804160.

The previous prime is 23148607. The next prime is 23148703. The reversal of 23148641 is 14684132.

It can be written as a sum of positive squares in 4 ways, for example, as 70225 + 23078416 = 265^2 + 4804^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23148641 - 210 = 23147617 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23148241) 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, 8546 + ... + 10923.

It is an arithmetic number, because the mean of its divisors is an integer number (3066525).

Almost surely, 223148641 is an apocalyptic number.

It is an amenable number.

23148641 is a deficient number, since it is larger than the sum of its proper divisors (1383559).

23148641 is a wasteful number, since it uses less digits than its factorization.

23148641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19539.

The product of its digits is 4608, while the sum is 29.

The square root of 23148641 is about 4811.3034616411. The cubic root of 23148641 is about 284.9980137340.

The spelling of 23148641 in words is "twenty-three million, one hundred forty-eight thousand, six hundred forty-one".

Divisors: 1 29 41 1189 19469 564601 798229 23148641