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23189469 = 37729823
BaseRepresentation
bin101100001110…
…1011111011101
31121122010222020
41120131133131
521414030334
62145010353
7401051532
oct130353735
947563866
1023189469
11120a9656
1279239b9
134a5c0a4
143118d89
152080e49
hex161d7dd

23189469 has 4 divisors (see below), whose sum is σ = 30919296. Its totient is φ = 15459644.

The previous prime is 23189459. The next prime is 23189527. The reversal of 23189469 is 96498132.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 23189469 - 28 = 23189213 is a prime.

It is a super-2 number, since 2×231894692 = 1075502945003922, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 23189469.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23189459) 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, 3864909 + ... + 3864914.

It is an arithmetic number, because the mean of its divisors is an integer number (7729824).

Almost surely, 223189469 is an apocalyptic number.

It is an amenable number.

23189469 is a deficient number, since it is larger than the sum of its proper divisors (7729827).

23189469 is an equidigital number, since it uses as much as digits as its factorization.

23189469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7729826.

The product of its digits is 93312, while the sum is 42.

The square root of 23189469 is about 4815.5445174975. The cubic root of 23189469 is about 285.1654687008.

The spelling of 23189469 in words is "twenty-three million, one hundred eighty-nine thousand, four hundred sixty-nine".

Divisors: 1 3 7729823 23189469