Search a number
-
+
23020212 = 2231918351
BaseRepresentation
bin101011111010…
…0001010110100
31121022112210110
41113310022310
521343121322
62141223020
7366445215
oct127641264
947275713
1023020212
1111aa3476
127861a70
134a00037
1430b340c
15204ac0c
hex15f42b4

23020212 has 12 divisors (see below), whose sum is σ = 53713856. Its totient is φ = 7673400.

The previous prime is 23020201. The next prime is 23020273. The reversal of 23020212 is 21202032.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Harshad number since it is a multiple of its sum of digits (12), and also a Moran number because the ratio is a prime number: 1918351 = 23020212 / (2 + 3 + 0 + 2 + 0 + 2 + 1 + 2).

It is a congruent number.

It is an unprimeable number.

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, 959164 + ... + 959187.

Almost surely, 223020212 is an apocalyptic number.

It is an amenable number.

23020212 is an abundant number, since it is smaller than the sum of its proper divisors (30693644).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23020212 is a wasteful number, since it uses less digits than its factorization.

23020212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1918358 (or 1918356 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 23020212 is about 4797.9383072316. The cubic root of 23020212 is about 284.4699782896.

Adding to 23020212 its reverse (21202032), we get a palindrome (44222244).

It can be divided in two parts, 23020 and 212, that added together give a palindrome (23232).

The spelling of 23020212 in words is "twenty-three million, twenty thousand, two hundred twelve".

Divisors: 1 2 3 4 6 12 1918351 3836702 5755053 7673404 11510106 23020212