Search a number
-
+
2790213 = 3930071
BaseRepresentation
bin1010101001001101000101
312020202110020
422221031011
51203241323
6135445353
732500506
oct12511505
95222406
102790213
111636368
12b26859
1376901a
14528bad
153a1ae3
hex2a9345

2790213 has 4 divisors (see below), whose sum is σ = 3720288. Its totient is φ = 1860140.

The previous prime is 2790209. The next prime is 2790223. The reversal of 2790213 is 3120972.

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 2790213 - 22 = 2790209 is a prime.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2790223) 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, 465033 + ... + 465038.

It is an arithmetic number, because the mean of its divisors is an integer number (930072).

22790213 is an apocalyptic number.

It is an amenable number.

2790213 is a deficient number, since it is larger than the sum of its proper divisors (930075).

2790213 is an equidigital number, since it uses as much as digits as its factorization.

2790213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 930074.

The product of its (nonzero) digits is 756, while the sum is 24.

The square root of 2790213 is about 1670.3930675144. The cubic root of 2790213 is about 140.7815640946.

It can be divided in two parts, 2790 and 213, that added together give a palindrome (3003).

The spelling of 2790213 in words is "two million, seven hundred ninety thousand, two hundred thirteen".

Divisors: 1 3 930071 2790213