Search a number
-
+
23214505 = 531149771
BaseRepresentation
bin101100010001…
…1100110101001
31121200102022111
41120203212221
521420331010
62145322321
7401214526
oct130434651
947612274
1023214505
1112116446
1279363a1
134a6a5c2
14312414d
15208858a
hex16239a9

23214505 has 8 divisors (see below), whose sum is σ = 28756224. Its totient is φ = 17972400.

The previous prime is 23214481. The next prime is 23214509. The reversal of 23214505 is 50541232.

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

It is not a de Polignac number, because 23214505 - 25 = 23214473 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23214509) 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, 74731 + ... + 75040.

It is an arithmetic number, because the mean of its divisors is an integer number (3594528).

Almost surely, 223214505 is an apocalyptic number.

It is an amenable number.

23214505 is a deficient number, since it is larger than the sum of its proper divisors (5541719).

23214505 is a wasteful number, since it uses less digits than its factorization.

23214505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149807.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 23214505 is about 4818.1433145974. The cubic root of 23214505 is about 285.2680559990.

Adding to 23214505 its reverse (50541232), we get a palindrome (73755737).

The spelling of 23214505 in words is "twenty-three million, two hundred fourteen thousand, five hundred five".

Divisors: 1 5 31 155 149771 748855 4642901 23214505